Geissele Standard Lower Parts Kit w/NO Grip 05-343 includes all the internal parts necessary to complete or rebuild an AR-15 lower receiver, minus the grip, giving builders 18 individual components to work with rather than a generic bag of mismatched hardware. This Geissele Lower Parts Kit features an improved safety detent paired with Geissele's specially designed Posi-Snap safety. That safety gives a satisfying, positive tactile click when switching between safe and fire positions, so there's no ambiguity about which mode the rifle is actually in under stress. The kit includes takedown and pivot pin detents and springs, a takedown pivot pin, bolt catch plunger, spring, and coiled pin, a mil-spec bolt catch, buffer retainer and spring, and a mil-spec trigger guard with coiled pin. This Geissele Lower kit rounds out the build with a magazine release button and spring, plus the magazine catch itself - everything a standard mil-spec AR-15 lower needs internally, just without a grip attached. Key Features: 18 individual mil-spec internal components Geissele Posi-Snap safety, positive tactile feedback Improved safety detent design Mil-spec bolt catch, plunger, spring, coiled pin Takedown and pivot pins, detents, and springs Buffer retainer and spring Mil-spec trigger guard with coiled pin No grip included - builder's choice This Geissele LPK hands builders every internal part a mil-spec lower needs, minus the one component everyone has their own preference on. Geissele Automatics Geissele Standard Lower Parts Kit w/NO Grip 05-343