XM177E2 Complete Upper Receivers - Brn XM177E2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black
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Brownells
Overview
The Brownells Xm177e2 Complete Upper Receiver is a fully assembled upper that features a 12.7-inch barrel with a 1:7 twist rate, making it suitable for stabilizing heavier projectiles. The black finish provides a sleek look while offering durability for various shooting conditions. This upper is often used in builds that prioritize compactness and versatility, catering well to both tactical and recreational applications.
Specifications
XM177E2 Complete Upper Receivers - Brn XM177E2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black
Build history on GunPartPicker
Builders on GunPartPicker first added the Brownells XM177E2 Complete Upper Receivers - Brn XM177E2 Upper Receiver, 12.7'''' 1-7 Twist, Pin/Weld, Black to a build in May 2026.
It was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $687.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 36 retailers
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