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以把 M4A1 縮短至接近 衝鋒槍 的尺寸，但發射步槍彈藥為設計原則，主要在要員保護（VIP Protection）、城市或室内等 近身距離作戰 （CQB）任务時使用。 CQBR亦被定為完整武器系統配发，原先只裝備 美國海軍 的特種作戰部隊，現在則已配发其他部隊作搜捕（VBSS）、要員保護、防衛及搜查等任務。 CQBR配備10.3寸（262毫米）短槍管，在組裝時需作特別修改，把導氣孔直径由0.062寸（0.16毫米）放大至0.070寸（0.18毫米）、三件式闭气环改為一体化McFarland …

Nov 1, 1999 · The kit is intended to optimize the effectiveness of the M4A1 from CQB/CRE range of less than 50 meters out to the 600-meter maximum effective range of the weapon.

Apr 30, 2024 · The MEU (SOC) M4A1 Rifle Qualification is (was?) the course of fire shot by Force Recon Marines in the “CQB Package.” Heavy on multiple targets, shooting on the move, and …

Aug 15, 2022 · 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 still making use of SOPMOD accessories.

Feb 21, 2017 · Muzzle Velocity: 2,900ft/sec (884m/sec) 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.

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.

Nov 13, 2015 · The venerable Heckler & Koch MP5 submachine gun is also slated to be replaced in special operations forces by the subject of this article, the M4A1 Close Quarters battle (CQB) Weapon. The M4 is essentially an M16A2 with a 14.5 inch (368mm) barrel, while the M4A1 is the shortened version of the “flat top” M16A3.

The Mk. 18 CQBR (Close Quarters Battle Reciever), known in-game as the M4A1 CQBR, is a lighter and more compact version of the M4A1. The M4A1 CQBR has a faster draw time, lower recoil, a shorter barrel, and has had its carrying handle replaced by the smaller rear sight.

Jul 31, 2016 · The correct name is M4A1 CQB/R Block II. With the leverage of several SOCOM units behind it, this blaster has quickly gained popularity amongst reenactors from all around the world. In the early 2000s, SOCOM needed a shorter version of the M4A1. Over time, two big upgrade Blocks were issued.