Aero Precision M4E1-T PRO Complete Upper, 13.7″ 5.56 CHF Mid-Length Barrel, 12.7″ ATLAS R-ONE
Includes PRO Bolt Carrier Group and BREACH Charging Handle
The PRO Upper Receiver Group is built around our PRO 5.56 Cold Hammer Forged Barrel paired with our PRO 5.56 BCG. The ATLAS R-ONE Handguard, BREACH Charging Handle, and VG6 Delta muzzle device turn this assembly into a premium turnkey solution for your next build.
NOTICE: The muzzle device on this upper receiver is not pinned or welded. All NFA rules and regulations apply.
- 13.7″ PRO 5.56 Cold Hammer Forged Barrel
- PRO 5.56 Bolt Carrier Group
- M4E1 Threaded Upper Receiver
- ATLAS R-ONE Handguard
- VG6 Delta Flash Hider
- Mid-Length Gas System
- AR15 BREACH® Ambi Charging Handle w/ Large Lever – Black
About Cold Hammer Forging
Cold hammer forging differs from other standard barrel manufacturing processes. Rather than drilling a blank and using cutters, buttons, and reamers to machine the chamber and rifling into the barrel, a cold hammer-forged barrel is formed around a mandrel with the rifling inclusions precision ground into it. This process is called “cold” hammer forging because the process is done at room temperature, and the metal is not heated.
|Gas Block Diameter||
|Made in USA||
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