The Geissele Automatics Standard AR-15 lower parts kit is a set of internal parts for completing or rebuilding a mil-spec AR-15 lower receiver (Geissele part no. 05-343). It includes Geissele’s own upgraded safety selector, the Posi-Snap, and an improved safety detent for more positive engagement. It suits a builder who wants a better safety than a stock kit provides.

Key Specifications

• It is made for mil-spec AR-15 lower receivers.
• The safety selector is Geissele’s proprietary Posi-Snap, which gives a crisp, tactile safe-to-fire click.
• It includes an improved safety detent for more positive engagement.
• The kit supplies internal parts for a lower receiver, for new builds or rebuilds.

Frequently Asked Questions

What does the Posi-Snap safety selector do? It gives a distinctly positive, tactile click when switching between safe and fire, so you can confirm the setting by feel.

Will it work with a mil-spec AR-15 lower? Yes. It is made for mil-spec AR-15 lower receivers.

Buy the Geissele Standard AR-15 Lower Parts Kit with Posi-Snap Safety Selector

A lower parts kit decides how the controls on your rifle feel, and Geissele’s version upgrades the safety. See more of our AR lower parts kits and order from our Lubbock, Texas gun shop for fast, insured shipping.