AR Parts in 5.56x45mm NATO

Harrington & Richardson 733 Complete 11.5" Upper, Black

Harrington & Richardson Retro M16A1 20" AR-15 Upper 5.56 1:7 Rifle Length, Black

Harrington & Richardson DMR Complete 20" Upper, 1/7, Black

Harrington & Richardson M16A2 Chrome Lined Complete Upper, Black

Harrington & Richardson M16A2 Stripped Upper Receiver, Black

Harrington & Richardson Retro 723 14.7" AR-15 Barrel Assembly 5.56 1:7 Carbine Length

Harrington & Richardson Retro M16A1 Stripped 20" Barrel Assembly

DPMS CAR-15 Lower Build Kit - ODG

BARREL SUB ASSM 14.5 MT 4140CM SBN 5.56MM

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 18" Lightweight Contour 1:7" Twist Nitride

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 16" Lightweight Contour 1:7" Twist Nitride

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 10.5" Lightweight Contour 1:7" Twist Nitride

Shaw AR-15 5.56 NATO Threaded Barrel 13.9in No Flute Lightweight Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel Straight Flute 20in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel Spiral Flute 20in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel No Flute 20in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel Spiral Flute 18in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel Straight Flute 18in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel No Flute 18in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel Spiral Flute 16in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

Shaw AR-15 5.56 NATO Threaded Barrel No Flute 16in HBAR Profile 1-7 Twist 1/2-28 Thread Matte Stainless

CMMG Bolt Carrier Group DI DISSENT Mk4 Black

CMMG Parts Kit Dissent Complete Bcg Repair Mk4 5.56Mm

Fortis Manufacturing 5.56MM AR15/M16 Hammer Charging Handle Hardcoat Anodized Red Medium