LanTac M-SPEC Lower Parts Kit Features The LanTac M-SPEC Lower Parts Kit is engineered to meet current military specifications which means every component from the takedown pin to the bolt catch roll pin is held to the same tolerances demanded by issued rifles. Its ambidextrous safety selector gives left and right handed shooters identical control over the weapon a detail that matters for duty use and competition alike. The bolt catch set screw is specifically compatible with LanTac Aero and other common lower receivers reducing fitment headaches during a build. Each of the 19 pieces in the kit including detents springs and the mag catch assembly is manufactured to the correct heat treatment for long service life. Builders will also find the included 1/16th Allen key useful for final assembly eliminating the need to source a separate tool. Because the kit is made in the USA it carries LanTac s lifetime warranty giving owners confidence in the parts long after the build is finished. The complete set covers everything a lower build needs apart from the receiver and grip streamlining the parts list for first time builders and veterans alike. For anyone assembling or refreshing an AR-15 lower this kit offers a dependable mil spec solution in a single package. LanTac M-SPEC Lower Parts Kit Specifications Manufacturer: LanTac Model: M-SPEC Lower Parts Kit Compatible Hosts: AR-15 Color: Black Handedness: Ambidextrous Pieces: 19 Country of Origin: USA Available At: GrabAGun