We manufacture our Semi-Auto upper to include the same design elements and high-quality standards that our Bolt Action uppers have. Top tier, USA-made materials and components combine to make an AR for all scenarios; from hunting and competition to self-defense.
Our uppers feature a 6061 Billet aluminum receiver, a 16” match grade 416R stainless steel barrel from Preferred Barrels with a 1:8 twist, a Mil-spec bolt carrier group and Mid-length gas system.
Rounding out our semi-auto upper is an ambidextrous charging handle and a 15” MLok handguard that ensures you have enough real estate for optics, designators, bipods, tac lights, or whatever other peripherals you want.
Just as with our Bolt Action ARs, we offer a manufacturer’s warranty and a Sub-MOA accuracy guarantee.
We accuracy test with factory Hornady Frontier 75 gr. BTHP ammunition.
100% American made with American materials.
Preferred Barrels 416R Stainless Steel; “Blackout” Cerakote
Uintah Precision profile
223 Wylde; 16” w/ A2 flash hider
Uintah Precision 15” M-LOK handguard
Uintah Precision 6061 Billet Aluminum upper receiver
Ambi Charging handle
Mid-length, Direct impingement gas system
Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat-treated to 60-61 RC
Mil-Spec Gas Key
Key Staked with Grade 8 Screws, per Mil-Spec
Mil-Spec Carpenter 158® Bolt w/ Spring and Ejector
Tool Steel Extractor w/ Spring and Viton O-ring
Mil-Spec Firing Pin w/ Chrome Finish
Mil-Spec Cam Pin
Full Auto Carrier (Backward compatible with all semi-auto rifles)
BCG Weight – 11.55 oz.
**This upper assembly is not a firearm, will ship directly to you and is legal to ship to any state.
Uintah Precision has top quality Firearms and accessories at affordable prices.
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