- All Shop Guns by Caliber
- .17 HMR
- .300 Norma Magnum
- .223/5.56
- .224 Valkyrie
- .22LR
- .22Mag/WMR
- .270 Win
- .30 Carbine
- .30-06
- .30-30
- .300 Blkout
- .300 Winmag
- .308/7.62x51
- .32ACP
- .338 Lapua
- .350 Legend
- .357 Mag
- .357 Sig
- .38 Spl
- .38 Super
- .380 ACP
- .40 S&W
- .410 Gauge
- .416
- .44-40
- .44 Mag
- .45-70
- .45 Colt
- .450 Bushmaster
- .454 Casull
- .458 Socom
- .45 ACP
- .460 S&W Mag
- .50 AE
- .50 Beowulf®
- .500 Mag
- .500 S&W Mag
- 10mm
- 12 Gauge
- 20 Gauge
- 5.45x39
- 5.7x28
- 6.5 Creedmoor
- 6.5 Grendal
- 6.8 SPC
- 7.62x39
- 7.62x54R
- 9mm
- .17 HMR
- .300 Norma Magnum
- .223/5.56
- .224 Valkyrie
- .22LR
- .22Mag/WMR
- .270 Win
- .30 Carbine
- .30-06
- .30-30
- .300 Blkout
- .300 Winmag
- .308/7.62x51
- .32ACP
- .338 Lapua
- .350 Legend
- .357 Mag
- .357 Sig
- .38 Spl
- .38 Super
- .380 ACP
- .40 S&W
- .410 Gauge
- .416
- .44-40
- .44 Mag
- .45-70
- .45 Colt
- .450 Bushmaster
- .454 Casull
- .458 Socom
- .45 ACP
- .460 S&W Mag
- .50 AE
- .50 Beowulf®
- .500 Mag
- .500 S&W Mag
- 10mm
- 12 Gauge
- 20 Gauge
- 5.45x39
- 5.7x28
- 6.5 Creedmoor
- 6.5 Grendal
- 6.8 SPC
- 7.62x39
- 7.62x54R
- 9mm
Upper Receivers
While the lower receiver is the foundation of the firearm, the upper receiver houses the components that most largely determine the performance of the rifle: the bolt carrier group and the barrel. Good news is, unlike a lower receiver, uppers are not considered firearms by the ATF! Meaning you can purchase the upper and have it shipped straight to your door, no FFL transfer and no paperwork! Also, you can assemble a variety of upper configurations and use most with the same lower, meaning you only have one serialized firearm capable of shooting a variety of calibers!