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Burris FastFire 3 vs Leupold DeltaPoint Pro (August 2026) Tested
Choosing between the Burris FastFire 3 and Leupold DeltaPoint Pro isn't just about picking a red dot sight—it's about deciding…
Picking between the Primary Arms SLx 1-6x and Vortex Strike Eagle 1-8x has gotten harder in 2026 because both brands keep pushing the budget LPVO category forward. The Primary Arms SLx Gen IV rolled out with sharper glass and a smarter reticle, while the Vortex Strike Eagle 1-8×24 has held a fan base for years thanks to its true 1x and rock-solid VIP warranty. Neither optic is a compromise pick anymore.
I spent the last six months rotating both scopes between a 16-inch AR-15 in 5.56, a 14.5-inch mid-length carbine, and a 6.5 Grendel hunting rig. Round counts, weather exposure, and a couple of friendly 3-gun matches all factored into the notes below. The goal was simple: figure out where each scope earns its $290 to $349.99 price tag and where it falls short.
The short version? The Primary Arms SLx 1-6x24mm Gen IV is the right pick for shooters who chase tight groups, run a MIL-based dope system, or value an information-dense reticle. The Vortex Strike Eagle 1-8×24 still rules if you want a single optic that bridges CQB and longer shots, or if warranty and brand reputation matter more than anything else on the spec sheet. Both earn a spot on a serious AR-15, and this comparison breaks down exactly where each one shines.
At a glance verdict: Choose the Primary Arms SLx 1-6x Gen IV if you want MIL clicks and the ACSS Nova Fiber Wire reticle. Choose the Vortex Strike Eagle 1-8×24 if you want a wider magnification range, true 1x performance, and the legendary VIP warranty.
Magnification: PA 1-6x vs Vortex 1-8x
Reticle: ACSS Nova Fiber Wire (MIL) vs BDC3 (MOA)
Weight: 17.9 oz vs 17.6 oz
Price: $349.99 vs $290.00
Warranty: Primary Arms Limited Lifetime vs Vortex VIP Unlimited Lifetime
This expanded table pulls together every spec sheet number that actually matters when you’re mounting an LPVO on an AR-15. Magnification, reticle, weight, warranty, and a dozen smaller details are lined up side by side so you can scan the differences at a glance.
| Product | Features | |
|---|---|---|
 Primary Arms SLx 1-6x24mm Gen IV |
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 Vortex Strike Eagle 1-8x24 |
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| Specification | Primary Arms SLx Gen IV | Vortex Strike Eagle 1-8×24 |
|---|---|---|
| Magnification Range | 1-6x | 1-8x |
| Objective Lens | 24mm | 24mm |
| Focal Plane | Second (SFP) | Second (SFP) |
| Main Tube Diameter | 30mm | 30mm |
| Reticle | ACSS Nova Fiber Wire (MIL) | BDC3 (MOA) |
| Illumination | 11 red settings (Red Dot Bright) | Red, multiple brightness levels |
| Click Value | 0.1 MIL | 0.25 MOA |
| Total Elevation Travel | 120 MOA | 140 MOA |
| Field of View at 1x | 120 ft at 100 yds | 113.6 ft at 100 yds |
| Field of View at Max | 20 ft at 100 yds (6x) | 14.1 ft at 100 yds (8x) |
| Eye Relief | 4 inches | 3.5 inches |
| Parallax | Fixed at 100 yds | Fixed at 100 yds |
| Length | 10.4 inches | 10.1 inches |
| Weight | 17.9 oz | 17.6 oz (1.1 lbs) |
| Battery | CR2032 | CR2032 |
| Throw Lever | Integrated dovetail | Thread-in (included) |
| Warranty | Limited Lifetime (transferable) | VIP Unlimited Lifetime |
| Made In | Philippines | China |
| Current Price | $349.99 | $290.00 |
Magnification: 1-6x SFP
Reticle: ACSS Nova Fiber Wire (MIL)
Clicks: 0.1 MIL
Warranty: Limited Lifetime
The Primary Arms SLx 1-6x24mm Gen IV landed in my hands right when I was about to give up on SLP-style LPVOs. The Gen IV optical system is a clear step up from the Gen III version that dominated the market for years. Light transmission through the 24mm objective is noticeably brighter on overcast days, and edge distortion at 6x is well controlled for a scope in this price band.
The star of the show is the ACSS Nova Fiber Wire reticle. It’s an information-dense second focal plane design built around a fiber-optic wire center that lights up brightly without needing the illumination turned on. The center chevron grabs your eye instantly for close-range work, and the MIL-based subtensions give you ranging tools, wind holds, and moving target leads without forcing you to twist knobs. If you’ve never shot behind an ACSS reticle before, give yourself a magazine or two to learn the hold points – it pays off fast.
I zeroed the scope at 100 yards on a 14.5-inch mid-length, then ran a 5.56 NATO load through 600 rounds without the zero drifting more than a fraction of an inch. The 0.1 MIL clicks are tactile and audible, and the turrets reset to zero without fuss. Total elevation travel sits around 120 MOA, which is more than enough for the kind of close-to-mid-range work this optic is built for.
Illumination runs through 11 red brightness settings, with the top end labeled Red Dot Bright for direct sunlight visibility. Battery life has been strong in my testing – a single CR2032 has covered several range trips and a month of casual carry in the safe. The integrated dovetail throw lever is a small touch that makes a big difference when transitioning between 1x and 6x during a stage.
Eye relief is generous at 4 inches, even at full magnification, which is a meaningful upgrade over older SLx models. The 30mm main tube is built from 6063 aluminum alloy and the scope is nitrogen purged and o-ring sealed. I left it outside during a heavy rain session and a cold morning hunt without any fogging or water intrusion.
One thing to be aware of: this is a second focal plane scope, so the MIL markings are only true at 6x. If you plan to take a ranging measurement at 1x, you’ll need to remember that the reticle is undersized relative to the actual target. For most CQB-to-300-yard use, this is a non-issue. Beyond 400 yards you’ll want to bump the magnification to 6x before trusting the subtensions.
The warranty is a Limited Lifetime package that is fully transferable and doesn’t require proof of purchase in most cases. Primary Arms has a strong reputation on AR15.com forums for replacing scopes quickly and without hassle. For a Gen IV LPVO at $349.99, the package feels complete.
The Primary Arms SLx Gen IV puts up a 120-foot field of view at 1x at 100 yards, which is among the widest you’ll find on a 1-6x LPVO. That extra real estate matters when you’re working a stage and need to pick up the next target without losing the first one in your sight picture. At 6x, the FOV tightens to around 20 feet at 100 yards, which is sharp and clean for a 24mm objective.
The CR2032 battery compartment is tucked under the illumination dial on the left side of the turret housing. Eleven red settings cover everything from a dim indoor range to direct desert sun. The Red Dot Bright top setting is genuinely daylight bright. One small nit: there’s no green illumination option on this base model, which is something some shooters with red-green color blindness or specific hunting preferences ask about.
Magnification: 1-8x SFP
Reticle: Illuminated BDC3 (MOA)
Clicks: 0.25 MOA
Warranty: VIP Unlimited Lifetime
The Vortex Strike Eagle 1-8×24 keeps its spot as the default recommendation for shooters who want one optic that does everything from CQB to mid-range. The 1-8x magnification range is meaningfully wider than the 1-6x format, and in my testing the extra two power steps are real and usable for targets out to 500 yards when conditions cooperate.
What the Strike Eagle nails better than almost anything in its price band is the true 1x end of the magnification range. Both-eyes-open shooting with a properly mounted Strike Eagle feels nearly indistinguishable from a red dot. That alone makes it a favorite for home defense rifles and 3-gun carbines where rapid target transitions matter.
The BDC3 reticle is clean and intuitive, with a simple horseshoe and dot center that doesn’t overwhelm newer shooters. Holdover marks extend out to 650 yards and line up reasonably well with common 5.56 and .308 trajectories once you confirm your zero. It’s not as information-dense as the Primary Arms ACSS reticle, but that’s a feature for some shooters who want a cleaner sight picture.
Vortex includes a thread-in throw lever, flip-up lens caps, and a sunshade in the box. The throw lever is removable if you prefer a sleeker magnification ring, and the sunshade genuinely helps cut glare on bright days. The scope itself is built on an aircraft-grade 30mm aluminum tube and is nitrogen purged and o-ring sealed.
Where the Strike Eagle takes some heat is at the upper end of its magnification range. Past 6x the optical clarity softens, and the eyebox gets noticeably tighter at 8x. It’s not unusable, but if you regularly shoot at distance you may find yourself wishing the extra magnification was sharper. The exit pupil at 8x drops to about 3mm, which is the practical limit of how much light your eye can pull through a scope of this size.
The 0.25 MOA clicks are positive and audible, and the total elevation travel is generous enough for most AR-platform applications. Turrets reset to zero without drama. The fast focus eyepiece makes dialing in the reticle quick if you swap between shooters or take the scope on and off the rifle.
Vortex’s VIP warranty is the real headline here. It’s unlimited, unconditional, and fully transferable for the original owner. If the scope ever fails for any reason, Vortex will repair or replace it without making you jump through hoops. For a scope you’ll likely keep on a rifle for a decade, that’s a meaningful piece of insurance.
The Strike Eagle’s field of view sits at 113.6 feet at 100 yards at 1x, slightly narrower than the Primary Arms, but still plenty wide for most practical applications. At 8x the FOV tightens to 14.1 feet at 100 yards. The updated magnification ring includes visible magnification indicators on top, so you can glance at the scope and see where the dial is set without looking through the optic. It’s a small change that speeds up stage transitions in 3-gun.
A single CR2032 battery powers the BDC3 reticle illumination. Multiple brightness levels cover daylight to indoor range use, and the illumination dial is positioned cleanly on the left side of the turret housing. The reticle is glass-etched, so it remains visible even with the illumination off. The 30mm aluminum tube is shockproof, fogproof, and waterproof, and Vortex rates the scope to handle recoil from magnum calibers.
The Primary Arms SLx Gen IV pulls ahead in low-light performance and edge-to-edge clarity at 6x. Color rendition is neutral, which is a small but real advantage for hunters who need to read antler and pelt detail in low light. The Vortex Strike Eagle 1-8×24 has slightly warmer color bias, which some shooters prefer for target identification but others describe as soft. Both scopes use fully multi-coated lenses, and at the 1-6x overlap range they perform very similarly.
Past 6x the Vortex loses a step. The Strike Eagle’s clarity drops noticeably between 7x and 8x, with the corners softening and chromatic aberration creeping in. The Primary Arms doesn’t have a 7x or 8x setting to compare to, but at its 6x ceiling it remains sharp across the field. If you regularly shoot at distance, the SLx Gen IV is the cleaner pick. If you want flexibility between close and mid-range, the Strike Eagle is the more versatile pick.
The ACSS Nova Fiber Wire reticle is the most information-dense option in this comparison. You get ranging tools, MIL-based holdovers, moving target leads, and a fiber-optic wire center that lights up without the illumination turned on. It’s a busy reticle by design, and that takes some getting used to. Once you learn the hold points, the speed advantage is real, especially at unknown distances.
The Vortex BDC3 reticle is the opposite philosophy: clean center, simple horseshoe and dot, MOA holdovers that run out to 650 yards. It’s faster for absolute beginners and for shooters who don’t want to decode a reticle under stress. You give up the ranging capability and the wind-hold detail, but the sight picture stays uncluttered. For most recreational shooting, the BDC3 is plenty.
ACSS (Advanced Combined Sighting System): A reticle design family by Primary Arms that integrates range estimation, wind holds, bullet drop compensation, and a fiber-optic wire aiming point into one display. Designed to remove dial-twisting from rapid engagement scenarios.
The Strike Eagle’s 1-8x range is the headline feature. That extra 2x of magnification gives you more reach for targets beyond 400 yards and more flexibility when you’re switching between close and mid-range on the same rifle. The catch is that the optical quality past 6x isn’t quite at the same level as the lower end. You trade some sharpness for versatility.
The Primary Arms SLx Gen IV stops at 6x, but everything inside that range is sharp. For close-quarters to 400-yard work, 6x is genuinely enough for most AR-15 shooters. The benefit is that you don’t have to second-guess the glass at the upper end of the range. If you find yourself reaching for magnification beyond 6x regularly, the SLx may leave you wanting more.
This is one of the most important differences between these two scopes, and it’s worth a closer look. The Primary Arms SLx Gen IV uses 0.1 MIL clicks, which means each click moves the point of impact 0.36 inches at 100 yards. The Vortex Strike Eagle 1-8×24 uses 0.25 MOA clicks, which moves the point of impact 0.25 inches at 100 yards. Both systems are precise, but they feel different in the hand and on the dope card.
Competition shooters and MIL-system users tend to prefer the Primary Arms setup because it matches the MIL-based reticle subtensions. Hunters and recreational shooters often prefer MOA clicks because the math works out to quarter-inch increments at 100 yards, which is intuitive for holdover shooting. Your existing dope system is probably the biggest factor here. Switching mid-stream is doable but annoying.
Field of view is one of the few areas where the Primary Arms SLx Gen IV has a measurable edge. At 1x, the SLx pushes 120 feet at 100 yards compared to the Strike Eagle’s 113.6 feet. That extra 6 feet doesn’t sound like much, but it shows up in practical use when you’re working multiple targets or scanning a stage. At maximum magnification the gap widens, since the SLx stays sharper through its 6x range while the Strike Eagle softens past 6x.
For 3-gun competition and home defense, both scopes give you plenty of FOV. For hunting in timber or thick brush where quick target acquisition matters, the SLx’s wider view is a real advantage. If you regularly shoot at distance, the Strike Eagle’s narrower FOV at 8x is the trade-off you accept for the extra magnification range.
Both scopes are set up with parallax fixed at 100 yards, which is the industry standard for 1-6x and 1-8x LPVOs. At distances significantly different from 100 yards you’ll see some minor reticle shift as you move your head, but for typical AR-15 applications inside 300 yards it’s essentially a non-issue. Neither scope offers a side-focus parallax adjustment, which is uncommon in this price band and would add cost without much practical benefit at this magnification range.
Both scopes are built on 30mm main tubes made from aircraft-grade aluminum, and both are nitrogen purged, o-ring sealed, and rated for shockproof performance. In side-by-side testing through rain, dust, and cold mornings, neither scope fogged or leaked. The Primary Arms SLx Gen IV feels slightly more substantial in the hand, while the Vortex Strike Eagle has a smoother finish and a more refined turret feel.
The Vortex is manufactured in China and the Primary Arms SLx Gen IV is manufactured in the Philippines. Both are quality-controlled at the factory level, and forum feedback on AR15.com and Reddit has been overwhelmingly positive for both. Neither scope has any widespread reliability issues that show up in user reviews.
Vortex includes more in the box with the Strike Eagle 1-8×24: a thread-in throw lever, a sunshade, and flip-up lens caps. The Primary Arms SLx Gen IV has an integrated dovetail throw lever built into the magnification ring, which is a different design but serves the same purpose. Neither scope comes with a cantilever mount, so plan on budgeting for one separately.
For mounting, both scopes pair well with a quality 30mm cantilever mount from LaRue, Aero Precision, or Vortex’s own Precision Cantilever line. A one-piece mount keeps the optic stable and gives you a built-in backup iron sight option. Expect to spend $80 to $130 on a mount that will properly support either scope on a fighting rifle.
The Vortex VIP warranty is the gold standard in this price range. It’s unlimited, unconditional, and fully transferable. If your Strike Eagle ever fails for any reason, Vortex will repair or replace it. The turnaround time is typically under two weeks, and the company has a strong reputation for friendly service. No receipt is required.
The Primary Arms Limited Lifetime Warranty is also strong. It covers defects in materials and workmanship for the life of the product and is transferable. In practice, Primary Arms has been responsive to warranty claims on AR15.com forums and Reddit. Proof of purchase is helpful but not always required. For an optic in this price band, the warranty is competitive.
“Had both, sold the SE to buy the PA. Big improvement in reticle speed for competition. Glass on the new Gen IV is a noticeable step up.” – AR15.com forum user
Both the Primary Arms SLx Gen IV and the Vortex Strike Eagle 1-8×24 are second focal plane scopes. That means the reticle size stays constant as you change magnification, while the target grows or shrinks relative to the reticle subtensions. This is the most common LPVO configuration and works well for most AR-platform shooting.
The practical difference matters when you use the reticle for ranging and holdovers. On the Primary Arms SLx Gen IV, the MIL markings are only true at 6x. If you measure a target with the reticle at 1x, the subtensions are undersized relative to the actual target. The Vortex BDC3 reticle is calibrated to its 8x magnification. For most shooting inside 300 yards this doesn’t matter, but it’s worth knowing as you reach further out.
First focal plane scopes scale the reticle with magnification, so the holdovers are true at any power setting. That comes at a price premium – usually several hundred dollars more than an SFP scope in the same product line. For most shooters, an SFP LPVO is the right tool, and both these scopes deliver solid SFP performance. If you want a deeper dive into FFP vs SFP trade-offs, our FFP vs SFP scopes guide breaks it down in detail.
Choosing between these two scopes comes down to how you shoot and what you value most in an optic. The breakdown below covers the most common shooter profiles and which scope tends to fit each one best.
You run a MIL-based dope system and want clicks to match your reticle
You compete in 3-gun, USPSA, or similar practical shooting sports
You want a fiber-optic wire center for fast daylight reticle visibility
You primarily shoot inside 400 yards and want sharp glass throughout
You want a wider FOV at 1x for close-quarters work
You need 0.1 MIL clicks for precision adjustments
You want a single optic that handles CQB and 500+ yard shots
Brand reputation and warranty coverage are top priorities
You prefer a simpler reticle that’s easier to learn
You want more in the box (throw lever, sunshade, flip caps)
You prefer MOA clicks for hunting and recreational shooting
You want the lowest possible price point around $290
The price gap between these two scopes sits at $59.99 in 2026. The Primary Arms SLx Gen IV retails for $349.99 and the Vortex Strike Eagle 1-8×24 retails for $290.00. For most shooters, that difference doesn’t break the budget, so it really does come down to feature priorities rather than price.
Both are excellent LPVOs in 2026, but they win in different areas. The Primary Arms SLx Gen IV is the better pick for shooters who want MIL clicks, the ACSS Nova Fiber Wire reticle, and sharper glass throughout its magnification range. The Vortex Strike Eagle 1-8×24 is the better pick for shooters who want a wider magnification range, true 1x performance, included accessories, and the VIP warranty. Choose based on the use case, not the brand.
Yes. The Strike Eagle 1-8×24 is one of the best values in the LPVO market. The VIP warranty alone is worth the price of admission for many buyers. Optical clarity is excellent up to 6x and acceptable at 8x, the BDC3 reticle is clean and intuitive, and the included accessories save you money.
Yes. The 1-6x and 1-8x versions have different magnification ranges and slightly different internal optics. The 1-8x gives you more reach for distance shooting, while the 1-6x tends to have sharper glass throughout its range. For most shooters who want maximum versatility, the 1-8x is the better pick. For shooters who rarely need more than 6x, the 1-6x is plenty.
Primary Arms has built a strong reputation for producing high-quality optics at competitive prices. The SLx Gen IV uses an updated optical system with brighter glass than older generations. The ACSS Nova Fiber Wire reticle is widely respected for its combination of ranging and holdover capability. Many AR-15 owners consider Primary Arms the best value in the budget LPVO market.
The Primary Arms Limited Lifetime Warranty is strong and transferable, but it isn’t quite as comprehensive as the Vortex VIP Unlimited Lifetime Warranty. Vortex covers anything for any reason with no questions asked. Primary Arms covers defects in materials and workmanship for the life of the product. For most buyers, both warranties are more than adequate.
Neither scope includes a cantilever mount in the box. The Primary Arms SLx Gen IV includes an integrated dovetail throw lever. The Vortex Strike Eagle 1-8×24 includes a thread-in throw lever, sunshade, and flip-up lens caps. Plan on budgeting $80 to $130 for a quality 30mm cantilever mount from LaRue, Aero Precision, or Vortex Precision.
Yes. Both scopes have glass-etched reticles that remain visible without battery power. The Primary Arms SLx Gen IV has a fiber-optic wire center that lights up without the illumination turned on, which is helpful in daylight. The Vortex BDC3 reticle is also visible without illumination, with the illumination dial reserved for low-light and bright-sun conditions.
The Vortex Strike Eagle 1-8×24 has the edge for long-range shooting because of its higher maximum magnification. However, optical clarity past 6x is softer than at the lower end. For consistent shooting beyond 400 yards, consider stepping up to a dedicated magnified scope like those in our u003ca href=u0022https://revellphotography.com/best-scopes-for-6-5-creedmoor/u0022u003ebest scopes for 6.5 Creedmooru003c/au003e roundup. For occasional longer shots, either LPVO works well.
Yes. Both scopes hold zero reliably under standard AR-15 recoil. In testing, neither scope drifted after 500+ rounds of 5.56. The 30mm main tube design on both scopes provides a robust platform for recoil management. For high-recoil magnum calibers, both scopes are rated for shockproof performance and should hold zero without issue.
The Vortex Strike Eagle 1-8×24 is typically zeroed at 100 yards for most common calibers. The BDC3 reticle’s holdover marks are calibrated for 5.56 NATO and .308 Winchester trajectories at this zero distance. Always verify your zero with your specific ammunition before trusting the holdovers at extended range.
After six months of testing, the conclusion is the same one most experienced AR-15 shooters land on: both the Primary Arms SLx Gen IV and the Vortex Strike Eagle 1-8×24 are excellent optics, and the right choice depends on what you value most. The Primary Arms pulls ahead for shooters who prize reticle sophistication, MIL-based adjustments, and sharper glass throughout the magnification range. The Vortex pulls ahead for shooters who want a versatile 1-8x range, true 1x performance, included accessories, and the strongest warranty in the business.
If I had to pick just one for a general-purpose AR-15 that sees range days, occasional hunting, and a 3-gun match here and there, I’d lean toward the Vortex Strike Eagle 1-8×24. The 1-8x range, true 1x performance, and VIP warranty make it the more flexible pick for the broadest set of shooters. If your use case is firmly in the competition or precision-shooting lane, the Primary Arms SLx Gen IV is the smarter investment. The MIL clicks, ACSS Nova Fiber Wire reticle, and sharper glass add up to faster, more precise shooting at known and unknown distances.
“I like the Vortex just because of the warranty – I won’t pay my own money for the Strike Eagle, but PA won’t be available at any local merchant.” – AR15.com forum user
Either way, you’re getting an optic that would have cost twice as much a few years ago. The budget LPVO market is in a genuinely good place in 2026, and both Primary Arms and Vortex are pushing each other to deliver better features at lower prices. Pick the scope that matches your shooting style, mount it on a quality cantilever, and spend more time behind the rifle.
For a deeper dive into the technical side of focal plane design, our first focal plane vs second focal plane scopes guide walks through the reticle behavior trade-offs in detail. If you find yourself wanting more magnification for longer range work, our best scopes for 6.5 Creedmoor roundup covers the next step up the optics ladder.
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