In the firearm world modularity is the name of the game, from interchangeable backstraps for handguns to caliber conversions for rifles. Nowhere is firearm modularity more important than the military.

Key Points - The M4 carbine, a compact derivative of the M16 rifle tracing its roots to the Vietnam-era CAR-15, became the ubiquitous weapon for US military personnel ...

The Army’s plans for a carbine competition could spur innovations in military weapon design. The M4 rifle has been standard issue for U.S. soldiers for the past 15 years. But that could change thanks ...

Nov. 9 (UPI) --Colt's Manufacturing Company and FN America have each been awarded $88.6 million by the U.S. Army for the production of M4 and M4A1 carbines. The purchases, announced Thursday by the ...

Air Force gunsmiths recently completed delivery of a new M4-style carbine designed to break down small enough to fit under most pilot ejection seats. The Air Force Gunsmith Shop has completed delivery ...