Own a piece of firearm history from the makers of the world’s most battle-proven firearms. The FN 15® Military Collector Series M4 upper receiver assembly is an authentic reproduction of the original, made to FN’s and the U.S. military’s exacting specifications. A 14.7-in. chrome-lined barrel is button-broached, with a 1:7 twist rate, the welded compensator brings the barrel length to 16-in. Cut with a 5.56x45mm NATO chamber to mate with the Carpenter 158 steel bolt, each MIL-SPEC bolt carrier is high-pressure and magnetic particle tested for enduring reliability.
Knights Armament M4 RAS Adapter rail with rail adapter covers
M16-style MIL-SPEC bolt carrier group and HPT/MPI-tested bolt made from Carpenter 158
Matech Rear Sight
Button-broached, chrome-lined barrel (16” overall length)
A2-style compensator (permanently attached), actual barrel length 14.7”
**$150 off orders $1000+ Valid from January 28, 2025 to February 28, 2025. Offer may not be combined with any other offers or promotions, is non-exchangeable and non-refundable. Offer valid within the US only.
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