AR15 Assembled Upper Receivers
The AR15 Stripped Upper Receiver is one of our most popular products. Forged from 7075-T6 aluminum, this stripped upper is precision machined to mil-spec M16/M4 specifications and features M4 feedramps.
The AR15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps.
The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.
The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.
The state of the art M4E1 platform starts with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.
The state of the art M4E1 platform starts with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.
AR10 Assembled Upper Receivers
The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with our M5 .308 lower receiver for a solid and dependable fit.
The M5 .308 Assembled Upper Receiver comes with both the port door and forward assist hardware preinstalled. Forged from 7075-T6 aluminum, this assembled upper is precision machined to accept standard .308 components and is the perfect upper for your big bore build. Match this with our M5 .308 lower receiver for a solid and dependable fit.
The M5E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering, we have condensed the parts needed to mount a free-floated handguard to a mere 8 screws. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.
The M5E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering, we have condensed the parts needed to mount a free-floated handguard to a mere 8 screws. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.
Upper Parts
The upper parts kit includes the parts you need to assemble your AR15 upper receiver.
The upper parts kit includes the parts you need to assemble your M5 (.308) upper receiver.
Additional Part & Barrels
All the right parts you need to complete your build.
Complete Uppers
This Bear Creek Arsenal AR-15 Complete Upper has a 16" barrel with an M4 Contour profile, made of 4150 Chrome Vanadium with a Parkerized finish, and features a 1:8 Twist Rate, a Carbine length gas system.
Bear Creek Arsenal .300 Blackout, 16" Parkerized Heavy Barrel, 1:8 Twist, Pistol Length Gas System, 15" MLOK Rail (Billet Upper Receiver)
Bear Creek Arsenal 5.56 NATO, 10.5" Parkerized M4 Barrel, 1:7 Twist, Carbine Length Gas System, 10" MLOK Rail
Bear Creek Arsenal 5.56 NATO, 10.5" Parkerized M4 Barrel, 1:7 Twist, Carbine Length Gas System, 10" MLOK Rail, Side Charging Upper
This Bear Creek Arsenal AR-15 Complete Upper has a 7.5" barrel with an M4 Contour profile, made of 4150 Chrome Vanadium with a Parkerized finish, and features a 1:7 Twist Rate, a Pistol length gas system.
Bear Creek Arsenal 5.56 NATO, 7.5" Parkerized M4 Barrel, 1:7 Twist, Pistol Length Gas System, 7" MLOK Rail, Side Charging Upper