M4E1 Threaded Complete Upper, 16" 5.56 Mid-Length Gov Barrel w/ 13.5" Slimline Handguard - OD Green Anodized

This complete upper includes our Slimline Handguard. 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.

NOTE: This part features a colored anodized finish. These finishes are held to different aesthetic standards than parts finished in black anodizing or Cerakote. For more information on colored anodizing visit our Knowledge Center.

Includes:

• M4E1 Assembled Upper Receiver
• 13.5" Slimline Handguard
• 16" 5.56 Gov Mid-Length Barrel
• Low Profile Gas Block and Mid-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

M4E1 UPPER FEATURES:

• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks

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

16" 5.56 MID-LENGTH BARREL FEATURES:

• Caliber: 5.56
• QPQ Finish
• Gov Profile
• .750" gas block journal
• Mid-length gas system
• M4 Feed Ramp Extension
• HP and MPI tested
• Standard A2 Flash Hider