5.56x45mm NATO Gun Parts

Guntec USA AR-15 Micro Trident Flash Can w/ Glass Breaker 5.56/.223/9mm 1/2x28 Anodized Gold

Rainier Arms Ruc Pro Mk1 5.56 Nato Partial Upper Receiver Black 16 in RA-MK1-16-PU-BLK

Rainier Arms Ruc Pro Mk2 5.56 Nato Partial Upper Receiver Black 12.5 in

Rainier Arms RUC DI 5.56 Nato Partial Upper Receiver Black 10.5 in

Andro Corp Industries AR-15 Lower Parts Kit Black

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades Anodized Gold

Guntec USA AR-15 Enhanced Lower Parts Kit w/ Upgrades Anodized Red

Guntec USA AR-15 Ultimate Rifle Kit Anodized Grey

Guntec USA AR-15 Essentials Kit Anodized Purple

Guntec USA AR-15 Slim Line Trident Flash Can With Glass Breaker Anodized Green

Steyr Arms AUG HBAR 24" Black Barrel w/Bipod 1255010673

ZASTAVA ARMS-ZPAP85 AK Pistol- 5.56x45-ZP8556

Maxim Defense Industries MDX 508 U.R.G. AR-15 5.56x45mm NATO 8.5 inch Upper Receiver Pistol Length 1-7 Twist 1/2x28 HATEBRAKE Black

Maxim Defense Industries MDX 505 PDX/SCW Compatible URG Upper Receiver 5.56 NATO Hate Brake 1/2-28 Thread 5.5in Barrel Black

Anderson Manufacturing AM-15 Stripped Lower Receiver Multi-Cal (No Logo)

Sons Of Liberty Gun Works L89ANOSET13LTGRY L89 Builder Kit Light Grey, Lower Kit

Cross Armory Double Stack for Magpul PMAG Gen 3 Aluminum Hard Black Anodized Black Small 10RD

LANTAC DGN556B-AAC DRAGON MB 223/556 1/2X28 AAC

Zeus Artemis Stripped Billet Lower Anodized 5.56

Andro Corp Industries ACI-15 Forged Receiver Set with 9.25" MLOK Handguard OD Green

Reap Weaponries SCY Flat Trigger 5.56x45mm NATO AR-15 Carbine Conversion Black

BUSHMASTER BFSIII Built Lower Receiver w/ 30rd Mag - Black

V Seven Gi Heavy 556/223 Complete Upper 16in 16HR GI-UR

V Seven Enlightened 556/223 Complete Upper 14.5in 14.5 ENLI 556 FLT-UR