223 Remington Upper Receivers

Dark Storm Industries DS-15 Upper Parts Ejection Port Door/Pin/Spring/C-Clip Forward Assist/Spring/Pin Black

LMT Defense MRP-L M-Lok 9.25 Hybrid Carbine Length AR-15 Stripped Upper Receiver

Stag Arms AR-15 16 Tactical CHPHS Midlength Left-Handed Upper Assembly - Black

V Seven Enlightened 7075 Aluminum AR15 Upper ENLI UR-ALU

V Seven Enlightened 2055 Lithium/Aluminum Ar-15 Upper Receiver ENLI UR-LIT

V Seven M4 Upper Assembly w/Vertical Lines Forward Assist

Guntec USA AR-15 Ejection Port Dust Cover Assembly Gen 3 Anodized Red

Brn-15A(R) M4 Stripped Upper Receiver - Brn-15 M4 Upper Receiver, Black

Ar-15 Upper Receiver Completion Kits - Brn M16a2 Upper Receiver Completion Kit

MSR15 Competition Upper Receiver .223REM/5.56mm 18"

Radian Weapons Assembled AR-15 Upper Receiver - 15.5" - Radian Brown

Lewis Machine and Tool Monolithic MRP-L Specwar Assembled AR-15 Upper Receiver - 11.5"

Lewis Machine and Tool MRP-L Stripped AR-15 Upper Receiver - 9.25" - M-LOK Grenadier Handguard

Lewis Machine and Tool M4 Assembled AR-15 Upper Receiver

Evolve Weapons Systems A2 Stripped AR-15 Upper Receiver

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

Harrington & Richardson BLEM Early 604 "Air Force" Complete Upper Receiver, 1/12 Twist, Gray.

Harrington & Richardson Early 604 "Air Force" Complete Upper Receiver, 1/12 Twist, Gray.

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

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

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

Harrington & Richardson BLEM 604 "Air Force" Complete Upper, 1/12, Black