Comments and Description:
450 Bushmaster 20" upper with complete bolt carrier group, BCM Mod 4 charging handle and two 7 round magazines $550 cash firm. I also have 3 more 7 round magazines and extra magazine followers for converting AR 20 round mags into 450 BM mags for an additional $125. The barrel is threaded 5/8 x 24 for use with any 45 cal suppresor. Text or Email.