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Posted: 3/30/2008 1:00:38 PM EDT
| I'm an obvious newbie. What makes a rifle an M-4? |
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It depends what you're asking for. What defines a civilian M4gery? A USGI M4 Carbine? A Colt M4? A USGI M4 Carbine is more or less: 14.5" 1/7 NATO barrel with M203 step cut and Gov't profile "F" Marked FSB A2 FH with either a crush washer or peel washer side sling swivel carbine length gas system Delta Ring extended feedramps in the barrel extension and upper receiver A2 profile lower receiver flattop upper receiver small, round forward assist SAFE/SEMI/BURST FCG four position collapsible stock castle nut A2 pistol grip These are the more or less generic features of an M4 Carbine, they're usually manufactured by Colt, and are marked as "M4 Carbine," though there have been some FN rebuilds documented. HTH, ~Augee |
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