| Colt 9mm SMG | |
|---|---|
 The Colt 9mm SMG | |
| Type | Submachine gun |
| Place of origin | United States |
| Service history | |
| In service | 1982–present |
| Used by | SeeUsers |
| Wars | Invasion of Panama[1] Miami drug war[2] |
| Production history | |
| Produced | 1982–present |
| Specifications | |
| Mass | 2.61 kg (5.75 lb) w/o magazine[3] |
| Length | 730 mm (28.9 in ) (stock extended)[3]650 mm (25.6 in) (stock retracted)[3] |
| Barrel length | 10.5 in[3] |
| Cartridge | 9×19mm Parabellum[3] |
| Action | blowback,closed bolt[3] |
| Rate of fire | 700-1000 round/min[4] |
| Muzzle velocity | 396m/s (1300)ft/s)[4] |
| Effective firing range | 100 m[3] |
| Feed system | 20- and 32-round detachablebox magazine[4] 100-roundBeta C-Mag |
TheColt 9mm SMG, also known as the Colt Model 635 or Colt M635, is a9×19mm Parabellumsubmachine gun manufactured byColt, based on theM16 rifle.[5]
The Colt 9mm SMG is a closed bolt,blowback operated SMG, rather than the conventionaldirect impingementgas operation of the standard 5.56×45mm M16 type rifle.[6] As aclosed bolt weapon, the Colt SMG is inherently more accurate thanopen bolt weapons such as the IsraeliUZI.[7]
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 anM16 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.[8]
Current Colt production models are the R0635 (RO635) which features a Safe/Semi/Full Autoselective 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 7 inches (180 mm) barrel, hydraulic buffer and simplified front sight post used by the DEA and the Department of Energy.[9][10]
The most common model is the 635, the latest version of which are simply marked SMG 9mm NATO.[11] 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 withRail 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.[12]
Argentina: Used by the Argentine Army.[13]
Ecuador[14]
India: Used by the Octopus Unit of Andhra Pradesh Police.[15]
Israel: Used by IDF special forces.[16]
Malaysia: Used by thePasukan Khas Udara (PASKAU) Counter-Terrorism Forces of theRoyal Malaysian Air Force[17]
Mexico[18]
United States: Used by theUnited States Marine Corps,[a][19][20]United States Marshals Service,Los Angeles Police DepartmentMetro DivisionSWAT,Federal Bureau of Prisons,Drug Enforcement Administration,Diplomatic Security Service,Department of EnergyFederal Protective Forces, and a number of other federal agencies.[21][22]
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