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Vortex Strike Eagle vs Primary Arms 1-6 - Which is Best?

There are few scopes that offer such raw versatility as the 1-6x scope. The scopes are renowned for being able to be used in a variety of settings. Whether you're out on a hunt, looking for something to improve your tactical performance, or just wanting to step your shot up at the range or shooting competitions, the 1-6x is a great option for you.

1-6x scopes are gaining even more popularity as a fitting accent for ARs because people often find that the standard iron sights on ARs aren't really cutting it for them. When this happens, they tend to look toward 1-6x scopes, which offer the ideal scope size and range for ARs.

But let’s assume you know all that, and you’re just trying to figure out which 1-6x scope to run with. Well, that’s where we come in. Both Vortex Strike Eagle and Primary Arms have very solid 1-6x scopes on the market, and this article is going to be a side-by-side comparison of both. We’re going to get to the bottom of this ultra-practical scope and see which company offers the better bang for your buck.

​Comparison Table

For your convenience, we've done a comparison of the specifications for the two 1-6x scopes.

Vortex Strike Eagle SFP

Primary Arms Silver Series FFP

Primary Arms Silver Series SFP

Cell
Cell

Linear FOV (low zoom)

116.5 ft/100 yd

110 ft/100 yd

110 ft/100 yd

Linear FOV (high zoom)

19.2 ft/100 yd

19.8 ft/100 yd

19.3 ft/100 yd

Eye Relief (low zoom)

3.5 in

4.3 in

3.5 in

Eye Relief (high zoom)

3.5 in

4.0 in

3.3 in

Objective Diameter

24mm

24mm

24mm

Elevation Adjustment(MOA)

140.00

50.00

100.00

Wind Adjustment (MOA)

140.00

50.00

100.00

Approximate Cost

$399.99

$399.99

$289.99

At first glance, there are quite a few similarities between these three scopes. There are some key differences, though, that may push you one way or another. This is going to be a pretty in-depth article because finding which one is the best (and for whom) means really focusing in on the finer details.

Vortex Strike Eagle vs Primary Arms Silver Series 1-6x FFP/SFP

Here, we have three very high quality scopes. In all honesty, you can’t go wrong with any of them. But you can only buy one, and you want to be an informed buyer and make the right decision - that’s where we come in. Both Vortex Optics and Primary Arms have a long history of providing high quality firearm accessories, and they continue to bring pride to their names with each of their respective flagship 1-6x scopes.

​Features

When three scopes are as similar as these are, it's generally easier to address all of them at once and just point out key differences between the three. That’s what we’re going to do here.


Dimensions

All offer the same exact dimensions in terms of length, lens diameter, tube size, and weight. You don’t have to worry about any of the scopes weighing you down, coming in at only a little over a pound each. All scopes are fairly low profile but pack a lot of power.

Optical Comparison

Regardless of which scope you go with, you’re going to be getting an incredible optical experience. Each scope offers six different levels of zoom. Th'e Strike Eagle does have a slightly higher range of vision between its highest and lowest zoom settings than either of the other scopes.  On either model, you'll find an illuminated reticle to help you hit on target, every single time. The Strike Eagle features a glass-etched reticle, allowing a highly intricate design. Both scope also offer coated lenses, ensuring that as much light as possible gets through the lens and to your eye. This ultimately means an easier time finding and hitting your target. The Strike Eagle’s lenses are built rugged, to keep them safe from scuffs and scratches.

Perhaps one of the more obvious differences comes down to the elevation/wind adjustments and eye relief. The eye relief on the Strike Eagle is the same across the board, meaning you don’t have to adjust yourself when you adjust the zoom. The other two don’t offer this luxury and you’ll probably have to fidget a little bit to see everything when you zoom in, though not enough for it to be an inconvenience. The Strike Eagle also has the highest degree of elevation and wind adjustment, but the other scopes also offer shooters a fair amount of leniency in this department. The worst is the Silver Series FFS scope, with only a max of 50 MOA wind and elevation adjustment - not horrible, by any means, but the others are better suited to longer-range or more disparate situations.

Quality-of-Life Comparison

All of the scopes have a bundle of different quality-of-life features. The quality-of-life features of the Strike Eagle show through in two facts: first, the turrets in the Strike Eagle offer a slightly faster re-indexing than those of the Silver Series. Additionally, the Strike Eagle offers a "Fast Focus Eyepiece", which lets you quickly focus your reticle so that you can make better shots quicker. However, the Primary Arms scopes also feature several different handy things, particularly the Advanced Combined Sighting System reticle which easily integrates bullet drop, wind, target movements, and range estimation.

Construction Quality

All three scopes are built to last, and this is evident in their construction. Rain or shine, plains or swamp, you don’t have to worry about water or humidity harming your scope too much thanks to both of them being highly waterproofed. The scopes are also highly fogproofed to make sure that the gases inside are stable and out of your way regardless of the weather conditions outside. The Strike Eagle is built to stand up to a little more, with some shockproofing intended to keep the recoil and sudden movement or damage from harming the internal mechanics of the scope. This is just one of the steps that the Strike Eagle takes to ensure a long life.

The Silver Series and the Strike Eagle both offer an extremely sturdy aircraft-grade aluminum body with an anodized matte finish that works to reduce glare and keep your eyes comfortable while you’re on the hunt. These are built to be durable and stand up to any bumps or bruises the scope might take over the course of its life.

​Uses

Between the three scopes, the real difference comes down to whether you’re wanting an FFP scope or an SFP scope. The Strike Eagle is an SFP scope while Primary Arms offers an FFP and an SSP scope. With FFP scopes, your reticle will grow or shrink with your zoom level. SFP scopes, on the other hand, keep your reticle at the same size regardless of your zoom level, offering a more natural transition. For people who hunt at low magnifications - that is, at short ranges - it can be hard to see the reticle in FFP scopes.. Many find, though, that illuminated reticles help ease this, and since all three models have illuminated reticles, this leaves them pretty much deadlocked. All three scopes are capable in a variety of situations, extremely well suited to shooting in tactical situations, competitive situations, and hunting alike.

​Price

Price is probably actually the easiest category to compare the three scopes by,dwith two of them coming in at pretty much the same price of around 400 dollars, and the Silver Series SFP coming in at only around 300 dollars. At any rate, it’s a steep price, but one that you will find is well-worth it in the end.

Vortex Strike Eagle SFP

​Summary and recommendations

Some articles make it harder than others to decide which scope is the winner, but this article actually makes it fairly easy. The Strike Eagle is well-built, but there isn’t a lot to set it apart from the other two. A simpler comparison of the Strike Eagle and the Silver Series FFP, since they’re both at the same price range, would come down to a simple consideration of whether you’re wanting an SFP or FFP scope. Throwing the Silver Series SFP into the mix puts a wrench in that though, since it’s over $100 cheaper than the Strike Eagle.

Primary Arms SLX 1-6x24mm SFP Rifle Scope Gen III - Illuminated ACSS-5.56/5.45/.308
  • Second focal plane ACSS reticle designed for 5.56 \ 5.45 \ .308
  • Improved ACSS reticle features a chevron center providing an infinitely small aiming point
  • Red illuminated with 11 brightness settings powered by included CR2032 battery
  • 6063-aluminum scope body has multi-coated lenses and is nitrogen purged, fog resistant and IP67 waterproof
  • Lifetime warranty - for defects due to materials, workmanship or normal wear and tear

If you’re going hunting or on unstable terrain a lot, you’ll probably still want to buy the Strike Eagle. Its shockproofing and build make it a little bit more amenable to wear and tear. Not to say that the Primary Arms scopes are weak, but the Strike Eagle will probably hold up a bit better. The fact that it’s an SFP makes it particularly well-suited to a number of different situations, especially in tandem with its relatively high maximum elevation and windage adjustments.

Vortex Optics Strike Eagle 1-6x24 Second Focal Plane Riflescope - BDC Reticle (MOA) with Sport Cantilever 30mm Mount - 2-Inch Offset
  • The Strike Eagle 1-6x24 is defined by speed and versatility. A true one power provides quick target acquisition in close quarter scenarios. Adjust to six power when you need to engage targets at a distance.
  • High quality, fully multi-coated lenses deliver a clear, crisp sight picture and optimal low light performance. The fast focus dial on the eyepiece ensures that your reticle is always sharp.
  • The illuminated, glass-etched BDC reticle features 11 illumination settings to accomodate for changing light conditions. An extra battery can be stored in the windage cap and easily released.
  • Waterproof, shockproof, and fogproof ensures reliability in all weather conditions.
  • The 2-inch offset of this cantilever mount positions the scope in a forward location, allowing the correct eye relief and head placement on your rifle at a height of 1.59 inches (40.39 mm) from the base. Weighs 6.7 ounces.

On the other hand, if you aren’t going hunting a lot in rough terrain (or otherwise putting yourself in position to get roughed up and knocked around), you’re probably going to just have to make a decision between the Primary Arms SFP and FFP scopes. For most shooters, the SFP will serve you perfectly fine, and with the $100 you save, you can buy more ammo!

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