Alexander Arms 18" Standard Upper .17 HMR 1:10, Black – UST17

Alexander Arms 0.17HMR rifles are not intended for use with CCI A17 0.17HMR ammunition. Utilizing CCI A17 0.17 HMR ammunition with this rifle will result in the warranty becoming void. Furthermore, all Alexander Arms upper receiver assemblies are meticulously assembled, comprehensively function-tested and primed for immediate firing.