my 6 yr old son and I built a dedicated lower a few weeks ago for the 450 upper my wife got me for christmas. so my original a2 m4 5.56 bushmaster got returned to its original form. since it made its way up to the lower 80's here in ohio, i cut loose from the wife and kids and headed to the in-laws back yard with some water bottles and a target
the lower consists of a stripped bushmaster multi-cal lower, rra operator m4 stock/buffer/spring, rra 2 stage target trigger kit, and a magpul + moe grip mated to the 20" upper, burris QD pepr mount, and a burris fullfield 2 4.5-10x50 scope.
heres my target at 150 yards, im happy as can be.
