- M4E1 Threaded Assembled Upper Receiver
- ATLAS S-ONE Handguard of choice
- Handguard Mounting Hardware
ATLAS S-ONE Handguard
The ATLAS S-ONE is the newest addition to the Aero Precision Handguard lineup. Machined from 6061-T6 Aluminum, the S-ONE line of handguards are designed with size and weight in mind, providing the perfect handguard for your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.
Available in KeyMod™ and M-LOK® profiles with 12” and 15” options (7” and 9” options coming soon).
- Front and rear picatinny rail
- Eliminated center of top rail for weight reduction
- Indexing grooves in 12:00 position for positive grip control
- Quick disconnect sling socket 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
M4E1 Threaded Assembled Upper Receiver
The M4E1 Threaded Assembled 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. Get the billet look without paying the billet price!
M4E1 Threaded Upper 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 and forward assist installed
Made In America? Yes Platform AR15 Weight(s) KeyMod: 7" - 16.38 oz / 9" - 16.96 oz / 12" - 18.43 oz / 15" - 19.31 oz M-LOK: 7" - 16.48 oz / 9" - 17.09 oz / 12" - 18.62 oz / 15" - 19.57 oz Other Features NOTE: Weights above include Gen 2 Upper, Handguard and Mounting Hardware.
- Light weight, looks great, but not for adjustable gas blocks. Review by F3 Dunphy
Quality Price Value
- Finish Your Build
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