Aero Precision M4E1 Threaded Assembled Upper Receiver - Anodized BlackThe M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is forged from 7075 T6 Aluminum, precision machined to work with all mil spec AR15 parts and includes the port door and forward assist pre installed. The M4E1

one with Oxpho- Blue™ and one with T-4

FINAL APPEARANCE CAN BE ENHANCED BY APPLYING A CLEAR COAT FINISH

American made with a lifetime warranty

Available in KeyMod and M-LOK® profiles with 7"

Forward Controls Design wasn't content to leave well enough alone

The original MIL-SPEC castle nut is a hard product to improve upon

This ABC/R is manufactured from strong billet 8620 alloy steel and heat treated with black nitrided finish for a long service life

so be certain to check with your specific scope and mount

The LSFA is another sign of Forward Controls Designs' commitment to producing components that enhance every aspect of the shooter's experience

Smaller ambidextrous release levers

Zero™ AR-15 hybrid triggers are available in Black Nitride and two pull weights: 3 lbs and 4

Rolled threads