5.56x45mm NATO Lower Receivers & Frames

Griffin Armament MK2 AR-15 Ambidextrous Stripped Lower Receiver Black

Sharps Bros Overthrow AR-15 Stripped Lower Receiver Bronze

Radian Weapons AX556 Builder Kit OD Green 5.56

Spikes Tactical Pipe Hitter Union Spade Logo Stripped Lower .223 Rem/5.56

Double Star Star-15 AR-15 Stripped Lower Receiver Matte Black

Radian Weapons Model 1 Builder Kit Gray 5.56 14 Handguard

Radian Weapons R0404 Multi Caliber N/A Gray Cerakote Billet Upper Lower Set

Radical Firearms RF-15 Complete Lower Receiver Multi-Cal

FRANKLIN ARMORY Pistol Model Stripped Pistol Lower Frame

Faxon FF-15 XRS Forged AR-15 Stripped Lower Receiver Anodized Black

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Titanium Cerakote

Faxon FF-15 X-TRA Lite AR-15 Stripped Receiver Set Anodized Black

Spikes Tactical Pipe Hitters Union Joker Forged Stripped AR-15 Lower Aluminum

Radian Weapons Model 1 Builder Kit OD Green 5.56 14 MLOK Handguard

Radian Weapons AX556 Multi Caliber 8.5" Flat Dark Earth Cerakote Rifle Receiver

WARRIOR SYSTEMS WSM15 5.56 NATO / 223 Rem Billet AR15 Lower Receiver w/ Flared Mag Well | Black

AMERICAN DEFENSE MFG UIC BILLET 223 Rem/556NATO Semi-Auto Stripped Lower Receiver w/ Installed Ambi Magazine Release & Bolt Catch (AD-UICLS-BLK)

ODIN WORKS OTR-15 5.56x45mm NATO Black Anodized Billet Lower (OTR-15-Billet-Lower-BLK)

Radian Weapons Upper/Handguard Set Flat Dark Earth 5.56