{{Hebiquote
|quotetext=The RO635 is not merely a submachine gun-sized AR-15 carbine, like the [[Mark 18]]; it is an actual, literal submachine gun. Though still It is not considered to be part of the AR-15 familyof rifles, this model is mechanically different, using because it uses a simpler blowback operation instead of the direct impingement gas operation system that defines the rifle-caliber is traditionally found in AR-15s. Despite that, the RO635 uses the exact same ergonomics as its more powerful cousins, and is viable as both a training platform for other AR-15 rifles and as a legitimate workhorse submachine gun.
|quoteauthor=Tempest
}}
The '''Colt RO635''' (better known as the '''Colt 9mm SMG''', also simply called '''RO635''') is a [[9x19mm Parabellum]] submachine gun.
== [[Maze Customs]] ==
This weapon belongs to one of the major [[Maze Customs]] families, the '''AR-15 family'''.
{| class="wikitable"
! colspan="3" style="background:#222222;width:300px;font-size:11pt;color:white" | [[File:AR-15.png|noframe|50px]] Customs family: AR-15
|-
| style="background:#999999;font-size:9pt" | '''Rifles''' || style="font-size:9pt" | [[Colt AR-15A2 R6550|AR-15A2]] - [[Colt M16A1|M16A1]] - [[Colt M16A2|M16A2]] - [[Colt M16A4|M16A4]]
|-
| style="background:#999999;font-size:9pt" | '''Carbines''' || style="font-size:9pt" | [[Colt M4A1|M4A1]]
|-
| style="background:#999999;font-size:9pt" | '''Subcarbines''' || style="font-size:9pt" | [[Colt Mark 18 Mod 0|Mark 18]] - [[Colt RO635|RO635]]
|-
|}
[[Category:Class 2 weapons]]