GREAT LAKES FIREARMS Complete AR15 Pistol Lower Receiver Braced Black

AERO PRECISION M4E1 Complete AR15 Lower Receiver w/ A2 Grip & M4 Stock - Black

Bushmaster XM15 E2S AR-15 Lower Receiver - Stripped Lower - Brown

Bushmaster XM15 E2S AR-15 Lower Receiver - Stripped Lower

Aero Precision AR-15 Complete Lower Receiver with MOE Grip and SL Carbine Stock Black

Bushmaster XM15 E2S AR-15 Lower Receiver - Stripped Lower - FDE

Lewis Machine and Tool MARS-L DMR AR-15 Lower Receiver with 2 Stage Trigger - Complete Lower

Dark Storm Industries DS-15 Fixed Mag AR-15 Lower Receiver - Stripped Lower