PRI Mk12 Mod 0 SPR Upper Receiver Group (URG)

This is the PRI standard configuration URG for the Mark 12 Mod 0 - 18" Mark 12 Mod 0 SPR Upper in Black Finish 5.56 Cal.

PRI originally supplied the US Navy at NSWC Crane with the round forearm free floating handguard for the SPR rifle, which became the Mk12 Mod0.  This is a recreation of the original rifle, with parts from PRI, Douglas Barrels and other mil-spec providers. Crane had originally produced the Mk12 upper receivers from commercial parts providers, like Precision Reflex.  At the beginning of the War on Terror, when M4 parts were in short supply for regular ground forces, Crane was forced to take out of mothballs M16 A1 lower receivers to mate to the custom uppers that Crane built.  Later versions of the Mk12 were found with lower receivers from Colt, Armalite, LMT and regular issue M4.

This Mark 12 Mod 0 is built with PRI's Retro Gen II, which is most representative of the early Mk12 upper receiver groups.

This upper comes tested by PRI and ready to shoot 5.56mm NATO ammo.  Charlie's recommends 77 grain Black Hills or Federal.  The upper is equipped with a 18" Douglas 416 stainless steel barrel with a fitted bolt and commercial carrier, flat-top receiver, PRI flip up front gas block front sight with thumb screw elevation adjustment and PRI rear sight, rifle length gas tube, a Gas Buster charging handle with big latch, and a AE Inc brake and collar. The system also comes with a Gen II Rifle length carbon fiber free float forearm in Black finish and a full length Picatinny top rail. This upper comes with a black barrel. 

Your choice of 1:8 or 1:7 twist.  Precision Reflex provides this reproduction with nice mix of period correct parts, PRI branded parts, and commercially available mil-spec parts to offer the history buff or shooting enthusiast with a good balance between authenticity, performance and price.

PRI MARK 12 MOD 0 SPR

 Accuracy is based on barrel type    5.56 Douglas  sub MOA

Standard on all PRI rifles and uppers are the Gas Buster Charging Handle with Military latch.

Manufacturer's Part Number:  07-556G2B (17 or 18)