M4E1 Threaded 10.5" 5.56 Carbine No Forward Assist Complete Upper w/ 9.3" M-LOK Slimline Handguard - Anodized

This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist. The Slimline handguards have a unique milling profile, designed to maximize grip ergonomics and minimize weight while still providing plenty of real-estate to accommodate any attachment needs the end user may have. This handguard maintains a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Includes:

• M4E1 Threaded Assembled No Forward Assist Upper Receiver
• 9.3" Slimline Handguard
• 10.5" 5.56 Government Profile CMV Barrel, Carbine Length
• Low Profile Gas Block and Carbine Length Gas Tube
• AR15 A2 Birdcage Flash Hider
• 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

M4E1 Threaded Upper Receiver Features:

• New enhanced forging that gives the upper receiver a "billet look"
• New picatinny profile that blends seamlessly with our Enhanced Series Handguards
• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door

SLIMLINE HANDGUARD FEATURES:

• Full top picatinny rail for optional attachments
• Full length MLOK attachment points at the 3, 6, and 9 o’clock positions
• Compatible with low profile gas blocks
• 1.3” Inside diameter
• 1.5” Outside diameter
• Compatible with mil-spec AR15 upper receivers and barrels
• NOT Compatible with M4E1 Enhanced Upper Receivers

10.5" 5.56 Barrel Features:

• 5.56 Nato 10.5" Barrel, 1/7 twist, 4150 CrMoV, QPQ, gas port drilled
• .750 gas block journal
• Carbine length gas system, .0785 gas port
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 flash hider