AR Sponsor
Posted: 2/25/2007 6:03:25 AM EDT
| This may sound stupid but I was wondering is there any difference in the lower for an M4 and a standard 20" rifle. |
M4 style usually has a 4-pos or six-pos buttstock, basically a collapsible buttstock. The 20" usually has the A2 style fixed buttstock. As far as the receiver, they are both the same. |
AR Sponsor