New 450 BM parts and Ammo. (AR Stoner competition muzzle brake 5/8x32 #557112 $20) (AR Stoner H3 heavy buffer #711733 $30) (Low profile gas block .936 ID, #459291 $15) (Wolff heavy duty spring #16501 $10) Deer ammo 450 bushmaster 10 boxes of Winchester Deer Season XP 250 grain. $40 per box. These average $50. Trade for 300 blackout ammo, 300 BO upper, small aluminum boat, Cash. Thank you.