The Close Quarter Battle Receiver (CQBR) [5] 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 ...

CQBR是藉由更換M4卡賓槍的上機匣及短槍管改裝而成的近战步槍，槍管只有10.3英寸（260毫米），可算是現代化版本的柯爾特突擊型（Colt Commando）。 CQBR於2000年正式裝備 美国海军 的 特種作戰部隊 。

Designed for Close Quarters Battle (CQB), the CQBR is significantly shorter than its M4 / M4A1 cousins, with a barrel-length of 10.3 inches compared to the M4's 14.5 inches. Like the Colt Commando previously used by US Special Operations Forces, the CQBR is an attempt to combine the hitting power of an assault rifle with the compactness of a ...

近戰機匣（Close Quarters Battle Receiver (CQBR)），美軍定名為Mk 18 Mod 0，亦被暱稱為近戰步槍。 CQBR是藉由更換 M4卡賓槍 的上 機匣 及短槍管改裝而成的近戰步槍，槍管只有10.3英寸（260公釐），可算是現代化版本的 柯特突擊型 （Colt Commando）。

室内近战机匣（Close Quarters Battle Receiver，CQBR）是M4A1卡宾枪的一个可替换上机匣，其目的是为海军特种部队提供一种长度短重量轻的近战武器，但又能与SOPMOD M4的战术附件完全通用，最大限度减少后勤维护的工作量。

2008年4月5日 · The Colt CQBR (Close Quarter Battle Receiver) consisting of the Lewis Machine and Tool back-up sight and SOPMOD stock, Knight’s Armament RAS with rail protectors, vertical pistol grip and compensator (for use with KAC quick detach suppressor). This is how the receiver is normally configured by Colt for the Navy.

CQBR是借由更换M4卡宾枪的上机匣及短枪管改装而成的近战步枪，枪管只有10.3寸（260毫米），可算是现代化版本的柯尔特突击型（Colt Commando）。 CQBR于2000年正式装备 美国海军 的 特种作战部队 。

室内近战机匣（Close Quarters Battle Receiver，CQBR）是M4A1卡宾枪的一个可替换上机匣，其目的是为海军特种部队提供一种长度短重量轻的近战武器，但又能与SOPMOD M4的战术附件完全通用，最大限度减少后勤维护的工作量。

The 10.3-inch barreled MK18 CQBR (Close Quarter Battle Receiver) carbines are also very popular among Cloners. If you live in a state that does not allow short-barreled rifles or if you just don’t feel like going through the hassle and cost of a tax stamp, using an arm brace over a stock and building an MK18 pistol is considered an acceptable ...

The Colt M4 cqb-r AEG is a great two-tone Desert tan and black airsoft M4 gun. Fully licensed Colt trademarks/logo M4 airsoft carbine with rails. Gun is primarily polymer built with some metal components. The rail system, upper/lower body, furniture, stock …