What is Close Quarters Battle Receiver?
{{no sources|date=October 2023}} [[File:M4A1-CQBR.png|thumb|An M4A1 with close quarters battle receiver]] The '''Close Quarter Battle Receiver''' ('''CQBR''') is an alternative [[upper receiver]] for the [[M4 carbine|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. {{ArmaLite AR-10 derivatives}} {{-}} {{Military-stub}} [[Category:Weapons]] [[Category:Assault rifles]]