YHM Model-57 Billet 5.56 NATO Matte Black AR-15 Lower Receiver

YHM’s Model-57 billet AR-15 lower receiver is built from 7075-T6 aluminum with a hardcoat anodized matte black finish. Designed with an oversized magazine well for faster, easier reloads, and a built-in oversized machined trigger guard for comfortable control, this stripped lower is made to accept standard Mil-Spec upper receivers and all generations of PMAGs.

Key features

• 7075-T6 aluminum billet construction for strength and rigid feel
• Hardcoat anodized matte black finish for durable, long-lasting wear
• Oversized magazine well chambers for easier magazine changes
• Built-in oversized machined trigger guard for improved handling
• Stripped lower that accepts standard Mil-Spec upper receivers and PMAGs

Start your next AR-15 build with a YHM billet lower designed for smooth operation and a distinct look.