When building your next AR-15 or project firearm you need to start with a good foundation. The SilencerCo AR-15 stripped lower receiver fits the bill. This lower receiver is precision machined from 7075-T6 billet aluminum and featuring a hard coat anodized finish. This lower features an integrated trigger guard a proprietary ambidextrous bolt catch and an ambidextrous multi-position QD sling swivel port. This lower receiver will allow you to build the gun of your dreams.