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 ...

近战机匣（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）。

2025年2月4日 · 近战机匣（Close Quarters Battle Receiver (CQBR)），美军定名为Mk 18 Mod 0，亦被昵称为近战步枪。 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）。

The CQBR, designated Mk 18 Mod 0, is a variant of the M4 family of carbines. 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.

2016年9月14日 · 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 sights, and Buffer tube are all plastic.

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吋（260毫米），可算是現代化版本的 曲特突擊型 （Colt Commando）。

The Close Quarter Battle Receiver (CQBR) is an alternative upper receiver for the M4A1 Carbine. It was developed by the US Navy. A M4 upper receiver with a shortened barrel of 10.5” inches in length and has two variants, the Mod 0 and Mod 1.

2022年8月15日 · The CQBR Upper Receiver is a drop in replacement for the M4A1 standard upper receiver and when installed is known as the Mk18 by type-designation. It was originally intended to replace the 9mm MP5 series of sub-machine guns with a weapon firing the common 5.56mm round capable of penetrating body armor, while …

The Mk 18 Mod 0 consists of an M4A1 carbine equipped with the Close Quarter Battle Receiver (CQBR) upper receiver. It features a 10.3-inch Colt barrel, Daniel Defense RIS handrail, and is usually fitted with an optic and back-up iron sights .

2017年2月21日 · The CQBR Upper Receiver is a drop in replacement for the M4A1 standard upper receiver and when installed is known as the Mk18 by type-designation. It was originally intended to replace the 9mm...