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{{Hebiquote
|quotetext=The Mark 18 is one of the shortest members of the AR-15 family. It is a further development of the [[Colt M4A1|M4 carbine]], with an even shorter barrel - 10.5 inches instead of 14.5 inches. It is very popular among all sorts of people, but particularly heavy weapons users, as it essentially a very short M4A1; uses the same magazines, has the same ergonomics, yet short and light enough to allow carrying two other, larger weapons (or a heavy flamethrower, complete with fuel tank). The very short, submachine gun-like dimensions of this rifle have led to it (and similar rifles) being referred to as '''subcarbines'''.
|quoteauthor=Tempest
}}
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]]