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Adams Arms Upper Receiver Assembly - URA-P
The Adams Arms Upper Receivers are made to work directly with the Adams Arms Piston System. The receiver hole has been cut specifically to work with the Adams System system, eliminating the need for a receiver bushing. They are machined to Mil-Spec standards and are cut with M4 feed ramps. They are A3 flat top receivers with milled T-marks filled with white paint. They have been finished with a type 3 hard coat anodizing with a dry film lube.
The Adams Arms Piston Upper Receiver comes with:
- M4 Feed Ramps
- Type III Hard Coat Anodyzing with a dry film lube
- T Marked Picatinny Rails
- Receiver hole has been cut to .180" eliminating the need for a receiver bushing
- Cam Pin channel is cut to a 45 degree angle to eliminate Cam Pin wear
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