Ar15 Upper Receivers

Alexander ar15 diy 18" upper kit 6.5 grendel Other Features: Includes grendel upper receiver,gas block,gas tube & roll pins,charging handle,and thread protector.You assemble

Alexander upper receiver ar15 tact.50 beowulf threaded fde Other Features: Phosphate barrel finish, threaded barrel,shipped complete with bcg

Alexander upper receiver ar15 pistol.50 beowulf 12" tb blk Other Features: Ferritic nitrocarburizing of the barrel resulting in increased hardness & wear resistance, threaded barrel, includes bolt carrier group