Based on the unique early carbine configurations, these GAU-5A Upper Receivers are ready for your next Retro build.
The muzzle of the GAU-5A Upper Receiver, is capped by the classic XM177/GAU-5 moderator inspired flash hider, with ports around its radius. This muzzle device is a flash hider, unlike the original XM177 muzzle device, which was technically a suppressor.
The flash hider is attached to a lightweight 11.5 or 12.7 inch barrel. Why 12.7 inch? The 12.7 inch model has its muzzle device pinned and welded in place, allowing the overall length of the barrel to reach the required 16” for a rifle.
Uppers are available with a 1-12 twist barrel The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black carbine handguards closely emulate the original CAR handguards. These barrel assemblies do have a tapered slip ring, which is proper on early carbines of this type.
Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16 slick side style, without a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.
Key features of the GAU-5A Complete Upper Receivers:
Original price was: $985.99.$739.49Current price is: $739.49.
Based on the unique early carbine configurations, these GAU-5A Upper Receivers are ready for your next Retro build.
The muzzle of the GAU-5A Upper Receiver, is capped by the classic XM177/GAU-5 moderator inspired flash hider, with ports around its radius. This muzzle device is a flash hider, unlike the original XM177 muzzle device, which was technically a suppressor.
The flash hider is attached to a lightweight 11.5 or 12.7 inch barrel. Why 12.7 inch? The 12.7 inch model has its muzzle device pinned and welded in place, allowing the overall length of the barrel to reach the required 16” for a rifle.
Uppers are available with a 1-12 twist barrel The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black carbine handguards closely emulate the original CAR handguards. These barrel assemblies do have a tapered slip ring, which is proper on early carbines of this type.
Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16 slick side style, without a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.
Key features of the GAU-5A Complete Upper Receivers:
Out of stock
Based on the unique early carbine configurations, these GAU-5A Upper Receivers are ready for your next Retro build.
The muzzle of the GAU-5A Upper Receiver, is capped by the classic XM177/GAU-5 moderator inspired flash hider, with ports around its radius. This muzzle device is a flash hider, unlike the original XM177 muzzle device, which was technically a suppressor.
The flash hider is attached to a lightweight 11.5 or 12.7 inch barrel. Why 12.7 inch? The 12.7 inch model has its muzzle device pinned and welded in place, allowing the overall length of the barrel to reach the required 16” for a rifle.
Uppers are available with a 1-12 twist barrel The front sight base is not F-marked, meaning the round, tapered front sight post is properly in line with the carry handle rear sight. The black carbine handguards closely emulate the original CAR handguards. These barrel assemblies do have a tapered slip ring, which is proper on early carbines of this type.
Mounted to the upper is a proper ejection port cover, with a flat external "bump" (not just an off the shelf A2). The receiver is the proper M16 slick side style, without a forward assist but no shell deflector. The rear sight is the standard A1 aperture, that can easily be adjusted with a cartridge or tool. Included bolt carrier group is the proper manganese phosphate mil-spec BCG, with chrome lined interior.
Key features of the GAU-5A Complete Upper Receivers:
| Weight | 5.15 lbs |
|---|---|
| Twist | 1-12 |
| Finish | Phosphate |
| Cartridge | AKK_5.56 x 45 |
| Length | 12.7'' |
| Style | Complete |
| Color | Black |
| Muzzle | 1/2-28 |
| Contour | Lightweight |
We stock both premium factory-new components and high-quality once-fired brass. Please check the specific product listing title and description carefully; once-fired brass is fully inspected, but we always recommend resizing and inspecting prior to priming and powder charging.
Our standard reloading dies and case length trimmer accessories utilize industry-standard threads (typically 7/8"-14) compatible with major single-stage, turret, and progressive presses like RCBS, Hornady, Lee Precision, and Dillon. Caliber-specific trim gauges must match your exact brass caliber.
Yes. Non-hazardous reloading equipment (dies, case length trimmers, gauges, and unprimed brass) ships via standard ground carriers with no extra fees. Any orders containing smokeless powders or primers will incur standard federal HazMat handling fees and cannot be shipped via air transportation.
Precision reloading gear is valuable, so all orders are shipped with tracking enabled. As soon as your package is dispatched from our inventory warehouse, a tracking number will be emailed to you. You can monitor your shipment directly on our Track Order page using your unique Order ID.
We accept returns on unused, unaltered tools, case preparation equipment, and unopened component boxes within 30 days of item delivery. Due to safety and strict quality control on the reloading bench, we absolutely cannot accept returns on opened packs of primers, smokeless powder, or processed brass casings.
