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Precision Reflex Inc. (PRI) 6.8x43mm REM SPC Upper Receivers

by David Crane [email protected] Precision Reflex Inc. (PRI) has a new 6.8x43mm REM SPC (Special Purpose Cartridge) upper receiver designed/developed to replace any AR-15/M16-based weapon’s 5.56x45mm upper receiver. Noted gunwriter Gary Paul Johnston has stated that the new PRI 6.8mm REM SPC uppers "have… proven 1-MOA accurate or better". These uppers are available with either 18.5" or 16.5" free-float Rock ... Read More »