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$0 Hazmat Fee On All Primer & Powder Orders - STOCK UP NOW!

$0 Hazmat Fee On All Primer & Powder Orders - STOCK UP NOW!

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BROWNELLS XM177E2 COMPLETE UPPER RECEIVERS

Barrel Length
Model Number
Twist
XM177E2 11.5" Carbine Length 1-12 Upper Receiver
Brownells #
430108535
MFR #
BRN-17711-12
UPC
050806001091
$799.99
Coupon Code
Purchase Limit Help

In stock

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Specifications
Finish:
Phosphate
Color:
Black
Gas System Length:
Carbine
Barrel Contour:
Lightweight
Muzzle Threads:
1/2"x28
Gas Block Diameter:
0.625 Inches
Hand:
Right
Barrel Length:
11.50
Quantity:
1
Receiver Style:
Complete
Cartridge:
5.56x45 NATO
Twist:
1-12
Model Number:
Not Pinned/Welded
Restriction
Restricted Part:
Yes
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Description

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. Select 1-12 if shooting 55gr bullets, and 1-7 if shooting 62gr or heavier. 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 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 M16A1 style, with 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 XM177E2 Complete Upper Receivers:

  • M16A1 upper receiver without shell deflector
  • XM177 flash hider with proper grenade ring
  • 11.5” or 12.7” 5.56x45mm NATO barrel
  • 12.7” configuration features a pinned and welded muzzle device, making it 16”+
  • 1-12 or 1-7 twist & chrome bore & chamber
  • M16A1 ejection port cover
  • Tear drop forward assist
  • A1 rear sight assembly
  • Mag particle and high pressure tested
  • Carbine black polymer handguards with heatshields
  • Manganese phosphate mil-spec bolt carrier group with Carpenter 158 bolt

Restricted Part
Please check with your state regulations for ownership of Restricted Parts. May require documentation.

Available options: 
430108535 430108536
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    Not Available Dealers are dealers Brownells cannot ship guns to at this time. These dealers either do not meet our requirements for FFL transfers, or prefer to not perform transfers for guns purchased online from Brownells.

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