Spike's Tactical AR-15 Lower Receiver - No Logo - Cosmetic Blem

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

AERO PRECISION M4E1 Stripped Lower Receiver | Kodiak Brown Anodized

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

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

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

SPIKE'S TACTICAL No Logo II Semi-Automatic 223 Rem/556 NATO Black Non-Color Stripped Lower Receiver (STLS045)

WILSON COMBAT AR15/M16 Forged Mil-Spec Anodize Black Closed Triggerguard Lower Receiver (TR-LOWER-ANO-CTG)