The Close Quarter Battle Receiver (CQBR) [5] is a replacement upper receiver for the M4A1 carbine developed by the US Navy.

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 …

Feb 21, 2017 · 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 …

The M4A1/Mk 18 Close Quarters Battle Receiver (CQBR) is a short-barreled variant of the M4A1, optimized for close-quarters combat. Its compact size makes it highly maneuverable in tight …

Nov 9, 2023 · The CQBR (Close Quarters Battle Receiver) typically uses 5.56x45mm NATO ammunition.

The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 Carbine. The CQBR replaces the M4 with a barrel 10.3 in (262 mm) length, making it the …

Nov 4, 2024 · The Close Quarters Battle Receiver (CQBR) is a specialized upper receiver designed for military and law enforcement use, particularly for close-quarters battle (CQB) …

The Close Quarter Battle Receiver (CQBR) is a replacement upper receiver for the M4A1 carbine developed by the US Navy.

The CQBR is designed to provide improvement over previous AR-15 / M16 -type weapons in this category. The CQBR is usually issued as a complete weapon system, and not just an upper …

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 …