Uintah UP-10 Review: Quiet, Compact, Accurate

Uintah’s UP-10 blends AR ergonomics with bolt-action precision, staying compact, quiet, and flat-out useful with both subsonics and supersonics.

Meet the UP-10: Bolt-Action AR Control With Real Accuracy

The UP-10 is Uintah Precision’s flagship rifle. This gun shares many similarities with an AR-10, but it’s bolt-action instead of semi-auto. Why would they do that? Well, bolt action platforms are inherently more accurate than semi-autos, and they suppress nicely! The UP-10 that I’ve spent years testing is an 8.6 Blackout with a 12.5″ barrel and a collapsible SBA3 brace from SB Tactical. This gun is compact and capable of shooting a wide variety of projectiles. I tested mine with 220-grain supersonics to 350-grain subsonic ammunition. The UP-10 rode shotgun in my truck for months on end because it was capable of shooting a hard-hitting subsonic round, or a further-reaching supersonic, without any modifications to achieve reliability. I even took game animals with this gun, proving its lethality.

This gun maintains a compact profile even after adding a suppressor to the muzzle. Also, because the UP-10 uses a standard lower receiver, I can easily swap the upper for a semi-automatic AR-10 upper, only requiring the addition of a buffer and spring. But, before I continue to talk about the UP-10 in 8.6 Blackout, I think it’s important to also discuss who Uintah Precision is, what they stand for, and what their warranty covers.

Who Is Uintah Precision and Why This Design Works

Let’s learn a little about Uintah Precision, starting with their name. Uintah (pronounced YOO-IN-TAH) arises from this company’s geographic location in the Uintah Basin of the Uintah Mountains of Utah. Originally, Uintah Machine made coal mining machinery. They swapped to precision rifles when coal mining slowed down, and there was less demand for their products in that industry. When they pivoted from coal mining machinery to firearms, they weren’t simply chasing money; their founder, Richard Hamilton, chased his passion. Using the Thomas Edison approach to invention, they attempted 975,000 prototypes to make the perfect modern bolt-action, and finally succeeded. Today, they offer bolt-action AR15 and AR10 platforms (aptly named the UP-15 and UP-10), semi-autos of the same type, a muzzleloader, and even a cannon!

Warranty and the Sub-MOA Promise

Uintah warrants all receiver assemblies to be free of defects in workmanship and/or materials for the life of the receiver, bolt, and barrel extension nut. Also, if you are not happy with the upper/firearm, return it within the first 30 days for a replacement or full refund of the purchase price. However, any work done to the receiver assembly by anyone other than Uintah Precision voids all warranties. Uintah also guarantees sub-MOA accuracy, measured by 3-shot groups at 100 yards with match-grade ammunition.

Ordering the Standard UP-10: Options That Matter

As stated, I have a UP-10 in 8.6 Blackout with a 12.5″ barrel, 12″ handguard, and SBA3 brace. If you want to order this same gun, you can. Go to Uintah Precision’s website, under “UP-10 complete Rifle,” you can input if you want left or right-handed, what caliber and barrel length (15 standard options to choose from), barrel material, and trigger type you want. Any firearm with a barrel length of less than 16″ will come standard with an SBA3 pistol brace.

The combo I have runs $2,425.00, and the most expensive standard option goes up to $2,950.00. To jump into this higher price range, you need to select a carbon fiber barrel option. If you desire anything other than what is on the standard list, just call in and ask! The guys at Uintah enjoy a custom build as much as you do.

The UP-10 doesn’t just look like a bolt action; it’s a true bolt action with a 3-lug bolt and 60-degree throw. There are other bolt-action AR uppers out there that appear to be a true bolt action, but aren’t constructed in this way. The upper and lower are also machined from 7075 billet aluminum.

The upper features a 20 MOA rail and Preferred Barrels 416R stainless or carbon fiber barrel. The lower comes with a 3lb Uintah Vitrum single-stage trigger, Magpul K2+ grip, and PRS Lite stock (for orders with barrels > 16 inches). The UP-10 ships with (1) 10-round magazine and comes in a Savior Rifle Range bag, while full-length rifles come in Savior Specialist LRP bags, and pistol-length firearms come in the Grey Savior Covert bags.

The UP-10 is compatible with DPMS LR-308 patterned semi-auto uppers, so feel free to mix and match your uppers and lowers in all legal possibilities. And finally, the cherry on top: These firearms are 100% made in the USA!

My 12.5 Inch 8.6 Blackout Build and Setup

Again, the UP-10 I have tested is the 12.5″ 8.6 Blackout. This gun has a 12.5″ 416R stainless barrel threaded 5/8×24 at the muzzle. I chose to suppress this gun with a Diligent Defense DTF-STI 8.6mm suppressor and mounted an Arken SH-4 GenII 4-16×50 optic. These accessories were picked because the DTF-STI is a lightweight, high-quality suppressor that keeps the 8.6 Blackout comically quiet, and the Arken 4-16 power optic is an affordable yet capable optic with a power range that is conducive for close-range subsonic shooting as well as extended range supersonic engagements.

I chose 8.6 blackout purely because of the variety of ammunition available in supersonic and subsonic types. I wished to have a rifle that I could hunt with and use either subs or supers, depending on the situation or opportunity presented. The lethality of a subsonic 280-400 grain bullet is no joke, and I’ve got a lot of experience in subsonic hunting with a different, but similar caliber. And supersonic ballistics greatly extend the effective range of this platform when needed.

This pistol is everything you’ve come to know a high-quality AR to be, with billet 7075 aluminum upper and lower construction, precision manufacturing, and stylish design. The lower even comes with a buffer retainer pin and spring installed, for convenient and easy swaps to semi-auto uppers with the simple addition of a buffer and spring to the lower. You can also run the bolt action upper on a lower with buffer and spring installed, but it’ll feel different during operation than your typical bolt action. Speaking of bolt action feel, the UP-10 bolt runs smoothly. There is even a detent in the upper receiver that interacts with the bolt, making its operation feel positive and firm. You’ll find another detent in the lower receiver that puts pressure on the rear pivot pin lug, removing any play between the upper and lower receiver.

Real World: From Truck Gun to Quiet Hunter

I mentioned this earlier, but I’ve had this UP-10 in 8.6 Blackout for about two years now. I’ve taken it hunting several times, and I’ve taken game animals with it. I really like the versatility of the 8.6 Blackout because I’m able to carry supersonic and subsonic ammunition with me and decide which I want to use for any presented opportunity. I typically carry a supersonic round ready to go, and I’ll put a few subs in my pocket or as my second bullet in the magazine.

Be aware that you will want to zero your gun for one ammunition or the other. Say you zero your gun for supersonic ammunition, you’ll also want to test the subsonic ammunition to see what your adjustment needs to be for its zero. For example, I sighted in this gun with Aitken Arms 220 grain Maker TREX Supers, but I know that my zero for the Discreet Ballistics 280 grain Selous Expander ammunition is 9 MOA up and 3 MOA left. To make a 100-yard shot with this quiet, hard-hitting, subsonic expanding round, I just need to dial this in the scope and take the shot.

I killed a turkey last fall with the UP-10 using the Discreet Ballistics 280-grain Selous Expander ammunition, and it performed splendidly. This setup is so quiet that I will never forget how loud the impact of the bullet was when compared to the sound of the shot itself. And the terminal performance? It looked like a broadhead had passed through this turkey because the Selous Expander opened up so wide. Of course, it was a full pass-through.

Another reason I like hunting with the UP-10 is that the manual of arms is very familiar. I work and play a lot with AR-style rifles, and this gun looks and feels the same. With the exception that it’s bolt action, of course. Also, mounting accessories on the handguard is easy because of the full-length MLOK design. You can easily throw on bipods, accessory rails, clip-on thermal or night vision, laser designators, and much more to perfectly outfit this gun for your needs. If you aren’t an AR person, maybe the UP-10 won’t be attractive to you. If you are an AR person, I’m sure you are seeing the versatility here. Oh, and if you want a semi-auto for any reason, just throw a semi-auto upper on and go waste a bunch of ammo!

Accuracy Testing: Subsonic Reality, Supersonic Wins

For this accuracy test, I removed the suppressor from the UP-10 just to eliminate any potentially confounding variables. I also shot off a bench, using a bipod (Ckye Pod) up front and a rear bag to keep the gun stable. The barrel was allowed to cool fully between shot strings.

Most of the ammunition I tested is subsonic, probably because this is the main appeal of the 8.6 Blackout cartridge to me. I shot 3-round groups at both 50 and 100 yards, partly because the zero for each ammunition type was wildly different. I used the 50-yard group to get a closer zero for the 100-yard grouping. This inconsistency between ammo types also foreshadowed the general inconsistency that I saw with subsonic ammunition. In some instances, the 100-yard group measured less in MOA than the same ammunition grouped at 50 yards.

The ammunition I used was provided by the manufacturers, for the most part. This included Discreet Ballistics 280 grain Selous Machined Expanders, Mead 250 grain FMJ, and three different subsonic and supersonic offerings from Aitken Arms. I also grabbed some Fort Scott Munitions 285-grain TUI from Ammotogo.com.

As you can see, the UP-10 shot the supersonic ammunition the best, which is not surprising to me. It kept the Aitken Arms 220-grain Maker TREX Super ammunition grouping at or under 1 MOA, which is what Uintah Precision guarantees their rifles to shoot. The rest of the ammunition I tested is more novelty or special use. Still, the Mead 250-grain FMJ subsonic ammunition hovered near the 1 MOA mark.

Some of you may see that a few popular, expensive subsonic options shot pretty poorly and get upset. I would warn you that with subsonic ammunition, nothing is predictable. You may have to try many different bullets to find one that performs well in any given rifle, and I think that is illustrated here. If I were to hunt with the UP-10 beyond 100 yards, I would want to test other subsonic ammunition until I found one that performed as needed, and I have no doubt that I’d find this combo.

UP-10 12.5 Inch 8.6 Blackout Specifications and Features

• caliber: 8.6 Blackout
• barrel length: 12.5″
• twist rate: 1:3
• barrel diameter: 0.900″
• muzzle threads: 5/8×24
• weight: 7 lbs 4.7 ounces
• Trigger: Uintah Vitrum 3lb single stage
  • not compatible with all triggers, see website for compatibility
• 7075 billet upper; AMERICAN aluminum
• 7075 billet lower; AMERICAN aluminum
• 4140 AMERICAN steel bolt
• 20moa rail
• Preferred Barrels 416R Stainless match barrel
• Magpul K2+ grip
• SB Tactical SBA3 brace
• 12” M-Lok handguard
• Upper and Lower are DPMS LR-308 pattern for compatibility with semi-auto uppers
  • See the website for a list of compatible uppers/lowers
• sub-MOA guarantee
• additional accessories
  • (1) 10-round magazine
  • grey Savior Covert bag
• MSRP: $2,425.00

Final Thoughts: Familiar Controls, Bolt-Action Benefits

I really enjoyed the UP-10 in 8.6 Blackout. I have another UP-10 in 6 Creedmoor that I got years ago, and it is incredibly accurate, so I have no doubt that the inconsistency I saw in the accuracy test for this 8.6 Blackout is ammo-related. Perhaps this pistol is just picky about bullet design. Still, it showed that it can shoot MOA-sized groups with certain ammo, which is what this firearm is guaranteed to do, and I can’t be upset about that.

One reason that the UP-10 is so attractive to me is that the manual of arms is familiar since I shoot a lot of AR platforms. This, plus the fact that it suppresses nicely due to the bolt-action nature of the pistol, makes the UP-10 one of the most pleasant shooting experiences I can ask for. Also, if you are like me and want to shoot semi-auto on occasion, you can take uppers or lowers that you already own and swap things around (in a legal manner) to achieve this. The UP-10 is not only fun to shoot, but it’s robust, too. This gun is overbuilt using quality materials sourced right here in the United States. Overall, I give the UP-10 high marks, and it’ll stay a favorite of mine.

Learn more about Uintah Precision’s UP-10 here.