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STS SASS in 6.5 Grendel Review

USAMP1980

Private
Minuteman
Mar 2, 2011
3
0
43
Superior Tactical Solutions Semi-Automatic Sniper System in 6.5 Grendel
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Let me first say... "WOW!". I have never fired an AR sporting this level of accuracy, with a potent and versatile cartridge. Not only did this rifle blow away the SASS competition, it can hang with most bolt guns. Constructed around the AR-15 platform, the STS SASS also carries the advantage of lighter weight and mobility. Please read on...

Technical Specs:
VLTOR upper receiver
Smith & Wesson M&P lower
Broughton barrel - chambered by STS in .264 LBC (this allows use of both cartiadges, at safer pressures)
Suppressed Armament Systems flash suppressor
Les Baer bolt
Daniel Defense bolt-carrier group
TROY "free float" quad-rail
MAGPUL PRS Stock
MAGPUL "pistol" grip
Harris Bipod
Leupold Mark 4 LR/T M1 6.5-20x50 illuminated MIL-DOT scope

Zeroing:
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Firing the Hornady 123 grain A-MAX, the weapon quickly zeroed in at 25 yards. The time I'd been waiting for was here! Time to see what it could do at 100 yards. Brad at Superior Tactical Solutions had promised me 1/2 MOA accuracy, which satisfied my needs and expectations... however many manufactures make such a claim, very few deliver. As we all know, delivering sub-MOA accuracy out of semi-automatic weapon is much easier said than done. Attention to detail must be paid every single step along the way.

Once I knew the 100 yard zero was getting close, I decided to give it a whirl. I took aim at the upper-left target. It had been some time since I had fired a weapon with this light of a trigger. Measured at STS, the trigger broke consistently at 3 lbs. The looks and feel of an AR had triggered a mental association / muscle memory of Uncle Sam's trigger pulls... I had fired the weapon before I meant to, throwing one high. "OK... let me try this again". I then proceeded to fire off a 3-shot group. I knew I had done well, but it was time to go check the target. Hoping for 1/2 MOA accuracy, I measured the target to find "0.56".
[0.132 x 2 = .264]
0.56 - .264 = .296
I had fired just short of near perfect 1/4 MOA accuracy.
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But could it be repeated? Although my pics are limited, I assure you I fired approx 1/4 MOA accuracy a dozen times. There is no doubt in my mind that in more capable hands, this is the most accurate SASS I have ever seen.

In my opinion, it is one thing to show up to a range rested and quite comfortable... it's something entirely different for our soldiers and Marines abroad. So, I decided to intentionally increase my discomfort by donning my PASGT and ESS goggles.
About 50 push-ups and some double-shoulder-arm-taps later... with a tired neck and foggy goggles, I decide to try my hand again.
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As the day grew and muscles quivered, and 77 rounds later the groups began to spread. Gust of 20 mph winds made it difficult. I attempted to time my shots between the gusts, however the wind often triumphed. It felt like every time I carefully broke the trigger the gust hit me without warning. All things considered, the weapon continued to deliver despite being dirty. Considering the dirty weapon, hours of continuous firing, shaky muscles, and strong winds at full value... I continued to be impressed by the accuracy and reliability of this weapon.
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Re: STS SASS in 6.5 Grendel Review

[continued]

Internet research tells me that a Colt AR-15 typically produces about 5.5 pounds of recoil, and an AR-10 firing 7.62 NATO typically produces 15.5 - 18.5 pounds of recoil. Research also tells us that a full-length AR in 6.5 Grendel produces 8 to 8.5 pounds of recoil. But what about felt and perceived recoil? If I was a betting man, and I had to chose between the two, I would say that the Grendel did produce more recoil however it was barely noticible. Firing the 6.5 Grendel cartridge seemed as comfortable to me as firing the 5.56 NATO in Iraq. The unloaded rifle weighed in at 13.6 lbs with the Harris Bipod attached, 12.5 without. Heavier than a GI M-16, but noticable lighter than an AR-10 SASS.

So far, I have experienced a 30% reduction in magazine capacity... although this may prove better with other manufacturers’' magazines. This fact does not bother me as this is indeed a tactical rifle. When it comes to tactical shooting, i'll take 14 rounds of 6.5 Grendel over 20 rounds of 5.56 NATO any day.

My choice of the Leupold 6.5-20x scope had sacrificed some close-quarters ability, so I decided to add a NCSTAR green dot reflex sight combined with an angle mount. I had hoped to mount it from the top rail, angled down and starboard, however the large scope prevented good mounting. Instead, I was able to mount it on the starboard rail angled back up.
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Although I have to cant the weapon more to my left, it turned out well. Conveniently, aligning the sight causes the PRS stock to rest perfectly on my clavicle, allowing fast muscle memory.
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For those unfamiliar with the 6.5 Grendel cartridge, I included a pic (right) of 6.5 Grendel compared to 5.56 NATO (left)
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Conclusion: This rifle was worth every penny. I feel that for the price of the popular LWRCs, I had received an accurate and reliable weapon capable of many task. Every step of the way my experience with Brad and Superior Tactical Solutions was very pleasant. I have never dealt with a company with such great customer service. I was always treated like an VIP and never felt like I was just another customer. My close proximity to STS allowed me to visit on many occasions. Brad never failed to ask me if I needed something to drink and always cared about my needs and wishes for this rifle.
I recommend to anyone looking for a SASS or multi-purpose AR to inquire with STS first. The product and customer service is top notch!

Superior Tactical Solutions website
 
Re: STS SASS in 6.5 Grendel Review

Nice looking rifle but I don't see that one on their site. Maybe I need a little more caffeine this morning. What's one of those run you if you don't mind me asking? Can you finish your profile when you get a chance?

Matt
 
Re: STS SASS in 6.5 Grendel Review

Great Review -

I recently bought a JP LRP 07 which is chambered in 308 and it has about as much recoil as a 223 because of the break.

I posed a question in the bolt gun section the other day that asked why a bolt gun is generally considered more accurate than a semi-auto. I asked the question because my JP shoots 3/8 -1/2 moa consistently which is on par with my bolt gun. It seems to me that if this is the case then you'd think the military would go with semi-auto because it's as accurate and is much more versatile..
 
Re: STS SASS in 6.5 Grendel Review

Good review. Get her out to 600+ and let us know how she performs. Just about any AR will bang clover leafs at 100 with good ammo and a good operator. Its at 600+ where the real potential of the Grendel over the AR-15 .223R and AR-10 in .308W lives. Those 123gr Amaxs are beasts - Hornady has done a really good job w/ these factors loads.

If you have it, let us know the MV you were getting and the temp. When I had the 123gr Amax factory on the chrono, I was getting 2475fps +/- 10fps from my 18" Satern in 40*F. I actually think the 107gr SMK at 2700fps is a better Grendel round unless you are really going far out (800+) or hunting.
 
Re: STS SASS in 6.5 Grendel Review

awesome rifle, and great review.....but i see a ass load of "mall ninja" comments coming very soon
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bench
 
Re: STS SASS in 6.5 Grendel Review

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: El Wray</div><div class="ubbcode-body"><span style="color: #333300"><span style="font-weight: bold">Just curious what role this fine rifle is going to serve?</span></span> </div></div>
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bench
 
Re: STS SASS in 6.5 Grendel Review

Nice looking rifle, I dig the all flat dark earth. Let us know how the accuracy is when you try some extended ranges.