- Posts 2
Last Activity:11-08-2012 12:28 AM
Posted in thread: AR 15 Introductions to AR's 101 on 05-29-2012 at 07:40 AM
Will a RRA 223 upper work on my remington R15 450 bushmaster lower.
Posted in thread: suggestions for my first ar-15 build on 05-29-2012 at 07:34 AM
@ Canebrake if I read your thread right . My remington R15 450 lower wont be compatable with a
223 upper cause of the buffer spring? Is this right. The 450 is a great bear gun and was
thinking of gett...