The Colt M.A.R.C. (Modular AR Carbine) 16 SE is a modular AR-style carbine featuring a monolithic upper receiver machined from a single block of aluminum. Unlike previous models like the Colt 901, the M.A.R.C. 16 SE allows users to customize rail placement, offering flexibility for accessory mounting and a more comfortable grip for shooters who don't require extensive rail real estate. The platform is designed to accept Colt's 5.56 NATO uppers on its 901 receiver via an adapter block, expanding its versatility.
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