AR Parts in 5.56x45mm NATO

Noveske Rifleworks 5.56 AR-15 Barrel With Switchblock Gas Block - Mid-Length - Tapered - 14.5"

Geissele Automatics Border Patrol Center Tab MK20 Assembled AR-15 Upper Receiver - 9.6" - BLEMULA

Geissele Automatics Super Duty Assembled AR-15 Upper Receiver - BLEMULA

Geissele Automatics Super Duty Center Tab MK16 Assembled AR-15 Upper Receiver - 9.3" - DDC - BLEMULA

Geissele Automatics Super Duty Center Tab MK16 Upper Kit - Assembled Upper - Black - 15" - BLEMULA

Noveske Rifleworks Gen 4 N4 Light Recon CHF 5.56 Complete AR-15 Upper Receiver - 16" - FDE

Blem H&R 606 20" 5.56 NATO Upper, Black

H&R 606 20" 5.56 NATO Upper, Black

BLEM Harrington & Richardson 10" 607 Upper

Harrington & Richardson 10" 607 Upper

Blem Harrington & Richardson 733 Pistol Upper, 5.56, 17 Gray, C7

Harrington & Richardson XM16E1 Complete Upper, Gray, 1/12

Harrington & Richardson Retro "MP" AR-15 C158 Auto BCG, Non-Serrated

Harrington & Richardson Retro 604 "Air Force" Complete Upper Receiver, 1/7 Twist, Gray

Harrington & Richardson "Slickside" 20" Complete Upper, Gray 1/7 Twist

BLEM Harrington & Richardson Late 723 16" Upper, 5.56, 1:7 Gray, C7

Harrington & Richardson Late 723 16" Upper, 5.56, 1:7 Gray, C7

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

BLEM Harrington & Richardson C7 Stripped Upper Receiver, Gray

Harrington & Richardson C7 Stripped Upper Receiver, Gray

BLEM Harrington & Richardson C7 Complete 20" Upper, Black

BLEM Harrington & Richardson M16A2 Complete Upper Receiver, Gray

Harrington & Richardson M16A2 Complete Upper Receiver, Gray

BLEM Harrington & Richardson 733 Complete 11.5" Upper, Black