The Luth-AR A1 Stripped Slick Side Upper Receiver in 223/5.56mm (brand part no. UR-01-E3-S) is made from 7075-T6 aluminum forgings machined to final dimensions, reproducing the correct early-style carry handle contours with an A1-pattern rear sight housing. The Slick Side design eliminates the shell deflector and forward assist for a period-accurate look, so charging handle dust cover and rear sight components are sold separately. Because it is period-accurate, this upper does NOT have the M4-type feed ramps found on most current-production flattop AR15 uppers, and every mating surface is finished to current mil-spec dimensions so modern AR15 components fit correctly.

Key Specifications

• It is machined from 7075-T6 aluminum forgings.
• It is chambered for 223 Remington/5.56mm ammunition.
• It reproduces early-style carry handle contours with an A1-pattern rear sight housing.
• It is a Slick Side design, eliminating the shell deflector and forward assist.
• It does NOT include M4-type feed ramps found on current-production flattop uppers.

Frequently Asked Questions

Does this have M4 feed ramps? No, this is a period-accurate Slick Side A1 upper and does not have the M4-type feed ramps found on most current-production flattop AR15 uppers.

Are the charging handle and rear sight included? No, the charging handle, dust cover, and rear sight components are sold separately.

Built by Luth-AR and sold in our AR15 uppers category, it is a period-correct foundation for a retro build.

Buy the Luth-AR A1 Stripped Slick-Side Upper Receiver – 223/5.56

Upgrade your build with the Luth-AR A1 Stripped Slick-Side Upper Receiver – 223/5.56 and get the fit, finish, and function serious shooters expect. Backed by our team at Schaefer Defense, Order it now from our Lubbock, Texas gun shop and it will ship as soon as it’s ready to go out the door.