AR Parts in 5.56x45mm NATO

Ke-15 Forged Complete Lower Receiver W/ Selector 5.56mm

HM Defense HM15 556 Billet Upper & Lower SS bbl HM15-SPFSS-556-LR

Harrington & Richardson Retro M16A1 Lowers Receiver, Gray, Blem

Blem Harrington & Richardson M16A2 Lower Receiver Black

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Chrome Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 7.5in Pistol 4150 Moly Steel Barrel 1-7 Twist 7in M-LOK Free Float Hand Guard A2 Flash

Ghost Firearms Complete Upper Receiver Rifle Lower Parts Kit 5.56mm 16in Butt Stock 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2

Ghost Firearms Upper Receiver Pistol Lower Parts Kit 5.56mm 10.5in Carbine 4150 M4 Barrel 1-7 Twist 11in M-LOK Free Float Hand Guard Flash Can

Franklin Armory BFSIII Binary Trigger Equipped Libertas Lower Receiver w/ B5 Sopmod Stock - 00-20018-BLK

Foxtrot Mike-102 556 G2 Bufferless Lowers - 556 G2 Bufferless Lower Folding Adapter W/Thrill Grip

Foxtrot Mike-102 556 G2 Bufferless Lowers - 556 G2 Bufferless Lower Pic Rail Adapter W/Thrill Grip

DURAMAG 30-Round 5.56 NATO Stainless Steel Flat Dark Earth Magazine - 3023049175CPD

AR-15 30 Rd Magazine in .223 Rem / 5.56 Caliber by C-Products Defense Systems - Aluminum Grey

C-Products 3023001178CPD AR-15 30 Rd Magazine in .223 Rem / 5.56 Black Aluminum w/ Orange Follower

Colt 5.56x45mm M4 Complete Lower Receiver

Colt M4 Commando 5.56mm Semi-Auto Lower Receiver Assembly With "LE" Prefix

Centurion Arms F15 5.56 Stripped Forged Lower Receiver

Centurion Arms CM4 Forged 5.56 Stripped Upper/Lower Set - Thermal Fit

Centurion Arms CM4 5.56 Forged Lower Receiver

Brownells AR-15 20RD 5.56/.223 Steel Waffle Magazine

BHA Custom Lasered Don't Tread Virginia 30rd AR-15 Magazine - 10 PACK

BHA Custom Lasered Crash Landing 30rd AR-15 Magazine 10 Pack