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The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 Carbine, developed by the US Navy.
The CQBR features a 10.3 in (262 mm) length barrel (similar to the Colt Commando short-barreled M16 variants of the past) which makes the weapon significantly more compact, thus making it easier to use in, and around, vehicles and in tight, confined spaces. The overall length of the upper receiver is 19.25 inches (489 mm). With the stock retracted, the overall length of the weapon is 26.75 inches (679.4 mm).
Special forces units utilize the CQBR for scenarios such as VIP protection, urban warfare, and other close quarters battle (CQB) situations.
Its former preliminary National Stock Number (NSN) had been 1005-LL-L99-5996. A complete CQBR-equipped carbine now has the NSN 1005-01-527-2288.
Colt MK18 with PRI GasBuster Flash Hider (big military latch)
New upper, never fired
(It has oil on it so there is a little dust, I will wipe it down before shipment)
Colt Cage coded upper with square forging mark
Daniel Defense 10.3" 556 CHF NATO barrel with pinned low profile gas...
Hard to find LMT fixed sight, brand new.
There is oil on it. :p
Please PM me for any questions
I take PayPal friends and family and Venmo
Shipping OK, S/H $4.99
No trade requests please.
No separate part sales please
No face-to-face sales requests please