Retro Carry Handle Brn Gau-5a 5.56mm 12.7" Bbl 1-12 Twist W/Colt 4x21mm Scope
$782.99 at Brownells
In stock Sale
Length Brn XM177E2 5.56mm 12.7" Bbl 1-7 Twt Upper Pin/Weld W/4x21mm
Brownells Bundles · Upper Receiver
No ratings yetBest price
$1,025.99at Brownells
Out of stock checked Oct 23, 2026
In stock now instead
- Retro Carry Handle Brn Gau-5a 5.56mm 12.7" Bbl 1-12 Twist W/Col… $782.99at Brownells
- AR-15 16 Super Duty Stripped Upper Receiver Black $1,025.00at Brownells
- CMMG Dissent 10.50" Upper 5.56x45mm with 1:7 Twist Rate and M-L… $1,024.99at GunMag Warehouse
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $1,025.99checked Oct 23, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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In stock Sale
Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $1,025.99 | $1,025.99 | $1,025.99 |
Since Sep 28, 2026.
About this part
The Length Brn XM177E2 5.56mm 12.7" Bbl 1-7 Twt Upper Pin/Weld W/4x21mm is a 12.7" 5.56 / .223 upper receiver from Brownells Bundles. One store lists it, Brownells at $1,025.99.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 12.7" · Handguards
Specifications
- Manufacturer
- Brownells Bundles
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
From the manufacturer
Based on popular carbine configurations, these XM177E2 Upper Receivers are ready for your next Retro build. The muzzle of the XM177E2 Upper Receiver, is capped by the classic XM177E2 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. Barrels are available with a 1-12 or 1-7 twist. Se Mfg: Brownells Bundles
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