Aero Precision APAR501102AC: Aero Precision\'s Ambidextrous Lower Receiver is designed to give you full control from either side, resulting in a versatile firearm for any shooter. Whether you are right or left handed, Aero has you covered. Complete this receiver with a Norgon Ambi Catch and a Ambidextrous Safety Selector for full bolt, magazine and safety control from either side. Machined to mil-spec dimensions. PDQ AMBI-BOLT RELEASE FEATURES: Material: Military grade steel Coating: Matte black hard-coat anodized Mil 8625 Type 3 Class 2 Allows user to lock the bolt back as well as send the bolt forward Made in the USA ADD THE FOLLOWING PARTS FOR A COMPLETE AMBI LOWER: Norgon Ambi Catch - Allows user to release the magazine from either side of the receiver Battle Arms Development Ambidextrous Safety Selector - Allows user to manipulate the safety from either side of the receiver INCLUDES: Stripped Ambidextrous Lower Receiver PDQ Ambi- Bolt Release