The Colt 9mm SMG, also known as the Colt Model 635 or Colt M635, is a

9×19mm Parabellum The 9×19mm Parabellum (also known as 9mm Luger, 9mm NATO or simply 9mm) is a Rim (firearms)#Rimless, rimless, Centerfire ammunition, centerfire, tapered cartridge (firearms), firearms cartridge. Originally designed by Austrian firearm designer ...

submachine gun A submachine gun (SMG) is a magazine (firearms), magazine-fed automatic firearm, automatic carbine designed to fire handgun cartridges. The term "submachine gun" was coined by John T. Thompson, the inventor of the Thompson submachine gun, to descri ...

manufactured by Colt, based on the

M16 rifle The M16 (officially Rifle, Caliber 5.56 mm, M16) is a family of assault rifles adapted from the ArmaLite AR-15 rifle for the United States Armed Forces, United States military. The original M16 was a 5.56×45mm NATO, 5.56×45mm automatic ...

Design details

The Colt 9mm SMG is a closed bolt, blowback operated SMG, rather than the conventional direct impingement gas operation of the standard 5.56×45mm M16 type rifle. As a closed bolt weapon, the Colt SMG is inherently more accurate than

open bolt A firearm is said to fire from an open bolt or open breech if, when ready to fire, the bolt and working parts are held to the rear of the receiver, with no round in the chamber. When the trigger is actuated, the bolt travels forward, feeds a car ...

weapons such as the Israeli UZI. The overall aesthetics are identical to most M16 type rifles. Changes include a large plastic brass deflector protruding from the rear quarter of the ejection port, and a correspondingly shorter dust cover. Factory Colt 9mm SMGs are equipped with a 10.5 inch length barrel and have an M16 style upper receiver, which means they feature a fixed carry handle, no forward assist and A1 sights (with 50 and 100 meter settings). The magazine well of the receiver is modified with pinned-in blocks to allow the use of smaller 9 mm magazines. The magazines themselves are a copy of the UZI magazine, modified to fit the Colt and lock the bolt back after the last shot.

Variants

Current Colt production models are the R0635 (RO635) which features a Safe/Semi/Full Auto selective fire trigger group and the R0639 (RO639) which features a Safe/Semi/3-round Burst selective fire trigger group. Both are equipped with a 10.5 inch length barrel. The 633 was a modified compact version with a barrel, hydraulic buffer and simplified front sight post used by the DEA and the Department of Energy. The most common model is the 635, the latest version of which are simply marked SMG 9mm NATO. Until early 2010s, there are newer variants, R0991(RO991), R0992(RO992) and R6951 are introduced. The R0991 features Safe/Semi/Full Auto selective fire is constructed with Rail Integration System (RIS) picatinny rails on the flat-top receiver as well as around the barrel which allows the easy mounting of ancillary devices, has 10.5" barrel and equipped with a third generation composite buttstock; The R0992 has almost all the same features to the R0991, except the selective fire mode is Safe/Semi/3-round Burst only; The R6951 has almost all the same features of the R0991 and R0992, but doesn't have selective fire and has a 16.1" barrel instead of the 10.5" one. A suppressed variant known as the "DEA model" exists that uses an integral Knights Armament Company made suppressor covered with an M16A2 handguard.

Users

*: Used by the Argentine Army. *: Used by the Policia Nacional. *: Used by the Octopus Unit of Andhra Pradesh Police. *: Used by IDF special forces. *: Used by the '' Pasukan Khas Udara'' (PASKAU) Counter-Terrorism Forces of the Royal Malaysian Air Force *: Used by the

United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines or simply the Marines, is the maritime land force service branch of the United States Department of Defense. It is responsible for conducting expeditionar ...

United States Marshals Service The United States Marshals Service (USMS) is a Federal law enforcement in the United States, federal law enforcement agency in the United States. The Marshals Service serves as the enforcement and security arm of the United States federal judi ...

Los Angeles Police Department The City of Los Angeles Police Department, commonly referred to as Los Angeles Police Department (LAPD), is the primary law enforcement agency of Los Angeles, California, United States. With 8,832 officers and 3,000 civilian staff, it is the th ...

SWAT A SWAT (''Special Weapons and Tactics'') team is a generic term for a police tactical unit within the United States, though the term has also been used by other nations. SWAT units are generally trained, equipped, and deployed to res ...

Federal Bureau of Prisons The Federal Bureau of Prisons (BOP) is a Federal law enforcement in the United States, federal law enforcement agency of the United States Department of Justice that is responsible for all List of United States federal prisons, federal prisons ...

Drug Enforcement Administration The Drug Enforcement Administration (DEA) is a Federal law enforcement in the United States, United States federal law enforcement agency under the U.S. Department of Justice tasked with combating illicit Illegal drug trade, drug trafficking a ...

Diplomatic Security Service The Diplomatic Security Service (DSS) is the principal Specialist law enforcement agency, law enforcement and security agency of the United States Department of State (DOS). Its primary mission is to protect diplomatic assets, personnel, and info ...

, Department of Energy Federal Protective Forces, and a number of other federal agencies.https://www.forgottenweapons.com/psa-hr-clones-the-department-of-energy-colt-9mm-smg/

Gallery

Image:Colt SMG 635.jpg, Colt SMG 635 left side File:Colt 9mm SMG 635 10.JPG, Colt SMG 635 right side Image:Eds_Colt_SMG_635_left_side_with_M2_sight.jpg, Colt SMG 635, ML 2 Sight, Colt mount, and a magazine Image:Eds_Colt_SMG_635_right_side,_ML_2_sight,_Colt_mount.jpg, Colt SMG 635, ML 2 Sight, Colt mount

References

Notes

External links

*
Colt Defense

{{DEFAULTSORT:Colt 9mm Smg 9mm Parabellum submachine guns ArmaLite AR-10 derivatives 9mm SMG Submachine guns of the United States United States Marine Corps equipment Silenced firearms Military equipment introduced in the 1980s