Aero Precision M4E1 Enhanced 10.5″ 5.56 Complete Upper Receiver w/ Pinned FSB

Includes:

• M4E1 Enhanced Assembled Upper Receiver
• Enhanced Handguard of choice
• 10.5″ 5.56 Carbine Length CMV Barrel
• Pinned FSB and Carbine Length Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab
• The muzzle brake that comes with this complete upper receiver is NOT pinned nor welded to this barrel. Per the National Firearms Act, the muzzle brake MUST be pinned and welded to achieve the necessary 16″ as defined by the ATF for a rifle build.

M4E1 Upper Features:

• Forged from 7075 T6 aluminum
• Precision machined to M4E1 specs
• M4 feedramps
• Matte black hard coat anodized Mil 8625 Type 3 Class 2
• Laser engraved T-marks
• Comes assembled, with port door and forward assist installed
• Accepts standard AR15/M16 components
• Handguard mounting platform is forged into the receiver
• Works with Aero Precision handguards but also fits most BAR-system handguards
• Barrel nut and wrench are included

Gen 2 Enhanced Handguard Features:

• 1pc free float design
• Built in anti-rotation tabs
• Scalloped rails
• Continuous top rail
• 1.78″ inside diameter fits most muzzle devices and 1.5″ suppressors
• Compatible with low profile gas blocks
• Gen 2 Feature – Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
• Gen 2 Feature – Additional milling along flats to aid with gripping and add visual appeal
• Gen 2 Feature – New profile for the continuous picatinny top rail

10.5″ Barrel w/ Pinned FSB Features:

• 5.56 Nato, 10.5″ carbine gas, 1/7 twist, 4150 CrMoV, with F marked FSB taper pin
• .750 gas block journal
• Carbine gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Weight: 34 oz
• Front sight block comes stripped, no sight post or sling swivel
• Standard A2 flash hider