The FBI HRT-Type Custom 11.5" Upper Receiver Group is Charlie's faithful recreation of the short-barreled carbine upper carried by the FBI Hostage Rescue Team — the bureau's tier-one counter-terrorism unit. HRT's 11.5" Colt-pattern uppers have been the backbone of hostage rescue, high-risk warrant service, and CT operations since the unit stood up in 1983, and this build captures the correct configuration right down to the furniture and muzzle device.
Built on a forged flat-top M4 upper receiver with M4 feed ramps, the assembly pairs an 11.5" 1:7 chrome-lined barrel with a mid- or carbine-length gas system, F-marked front sight base, and the correct handguards associated with HRT loadouts. The bolt carrier group is full-auto profile, staked per MIL-SPEC, and shot-peened for durability. Every part is selected to match what's been documented in the hands of HRT operators — no substitutions, no "close enough" corners cut.
Drop this on a Colt M4 or clone-correct receiver set and you have a defensible, historically accurate FBI HRT carbine clone ready for competition, collection, or hard use. Order yours today.
Colt
