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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, vehicles and in tight, confined spaces.
The Monolithic Rail Platform (MRP) [3] was created by the company, a one-piece, Picatinny-topped AR-15-pattern upper receiver made from a forged aluminum block. [4] The MRP upper receiver has a quick-change barrel system. [5] Its top rail position matches M4 and E3-type weapons for optical and sight compatibility. [6]
The lower receiver will also accept older mil-spec M16 or M16 upper receivers with an adapter. Receivers will be available that accept 5.56×45mm NATO rounds, 6.8×43mm Remington SPC rounds, 7.62×39mm rounds, and 7.62×51mm NATO rounds. Each upper receiver has its own rail system, which allows scopes, or other optics to be pre-sighted for each ...
The Colt Canada C7 and C8 are a Canadian family of service rifles, manufactured by Colt Canada (formerly Diemaco), having similar design and function to the Colt M16A3.. The C7 and its variants have been adopted as the standard-issue rifle by the militaries of Canada, [2] Norway (special forces only), Denmark and the Netherlands.
A Special Purpose Receiver built by NWSC Crane Division, mounted on an M16A1 lower receiver The SOPMOD program also introduced the Special Purpose Receiver (SPR), a 16-or-18 in (406-or-457 mm) barreled upper receiver that would be mated to an M4A1 lower receiver to allow the weapon to serve as a designated marksman rifle (DMR).
A disassembled Mauser action showing a partially disassembled receiver and bolt. In firearms terminology and at law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving ...
This page was last edited on 27 July 2012, at 01:23 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...
The IAR6940 is marginally heavier than the IAR6940H at 10.1 lb (4.6 kg) compared to the latter at 9.28 lb (4.21 kg), with the main reason being that the IAR6940 sported a monolithic upper receiver while the IAR6940H used a lighter Knight's Armament Handguard. [5] Colt submitted the two variants as contenders for to the IAR program.