AR-AK-SMG

Spikes Tactical

Spikes Tactical STLS018 Spider Stripped Lower Receiver for AR-15 - Multi-Caliber, Black Anodized 7075-T6 Aluminum

Spikes Tactical

Spikes Tactical STLS019 Spider Stripped Lower Receiver for AR-15 Platforms

Spikes Tactical

Spikes Tactical STLS021 Spartan Stripped Lower Receiver for AR-15 - Multi-Caliber 7075-T6 Aluminum, Black Anodized Finish

Sharps Bros

Sharps Bros SBLR01 Hellbreaker Stripped AR-15 Lower Receiver with Multi-Caliber Compatibility

DPMS Panther Arms

DPMS Panther Arms DPDA151000 DP-15 Stripped Lower Receiver for Multi-Caliber Builds

Sig Sauer

Sig Sauer RM400SDI16BP M400 X-Series 5.56x45mm Rifle with 16-Inch Barrel and Magpul SL-K Stock

Springfield Armory

Springfield Armory STV91609B Saint Victor 9mm Luger Rifle with 16-inch Barrel and B5 Bravo Stock

Sig Sauer

Sig Sauer M400 SDI 5.56 NATO Semi-Auto Rifle with 11.5-Inch Barrel, Black Finish

Aero Precision

Aero Precision M4E1 Pro Complete Lower Receiver in Kodiak Brown - APAR600195

Black Rain

Black Rain Ordnance BROMLRBLK AR-15 Milled Lower Receiver in Black Anodized Aluminum

Spikes Tactical

Spikes Tactical STLS015 Punisher Stripped Lower Receiver for AR-15 - Multi-Caliber, 7075-T6 Aluminum, Black Hardcoat Anodized

Yankee Hill

Yankee Hill 125BILLET Billet Lower Receiver for AR-15 in 5.56x45mm NATO - Black Anodized 7075-T6 Aluminum