Home / Gun Parts / Aero Precision / Aero Precision M4E1 AR15 5.56mm 8in M-LOK Threaded Upper Receiver Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in M-LOK R-ONE Handguard Cerakote
Aero Precision M4E1 AR15 5.56mm 8in M-LOK Threaded Upper Receiver Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in M-LOK R-ONE Handguard Cerakote
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Aug 26, 2026
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Aero Precision M4E1 AR15 5.56mm 8in M-LOK Threaded Upper Receiver Pistol Length 1-7 Twist 1/2x28 A2 Flash Hider 7.3in M-LOK R-ONE Handguard Cerakote. The R-ONE handguards are designed with size and weight in mind while still providing plenty of real-estate to accommodate any attachment needs the end user may have. 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. Specifications for Aero Precision M4E1 R-ONE AR15 5.56mm 8in M-LOK Threaded Upper Receiver: Manufacturer: Aero Precision Caliber: 5.56mm Barrel Length: 8 in Barrel Profile: DRP Gas System Length: Pistol Length Barrel Twist Rate: 1-7 Firearms Threads Per Inch: 1/2x28 Handguard Type: Free-Float Muzzle Device: A2 Flash Hider Gun Model: AR-15 Fabric/Material: 7075-T6 Aluminum Gas Block Journal Size-Diameter: .750 in Handguard Length: 7.3 in Handguard Style: M-LOK ATLAS R-ONE Gun Rail: M-LOK Gun Type: Rifle Gun Make: AR Platform Aero Precision Barrel Material: 416R Stainless Steel Weight: 4 lb Bolt Carrier Group Included: No Charging Handle Included: No Magazine Included: No Condition: New Country of Origin: USA Features of Aero Precision M4E1 R-ONE AR15 5.56mm 8in M-LOK Threaded Upper Receiver: 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 and forward assist installed ATLAS R-ONE Handguard Features: Full top picatinny rail for optional attachments 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 Learn More about our NEW ATLAS Handguards 8" 5.56 Pistol Length Barrel Features: Chamber: 5.56 Length: 8" Twist: 1 in 7 Threading: 1/2"x28 Material: Chrome Moly Vanadium Finish: QPQ corrosion resistant finish both inside and out Gas Block: .750 Gas System Length: Pistol Weight: 17.76 oz M4 Barrel Extension HP and MPI Tested Package Contents: Aero Precision M4E1 R-ONE AR15 5.56mm 8in M-LOK Threaded Upper Receiver M4E1 Threaded Assembled Upper Receiver 7.3" M-LOK ATLAS R-ONE Handguard 8" 5.56 Pistol Length CMV Barrel Low Profile Gas Block and Pistol Length Gas Tube Product comes assembled What firearm models does the manufacturer say Aero Precision M4E1 R-ONE AR15 5.56mm 8in M-LOK Threaded Upper Receiver is compatible with? The manufacturer says that Aero Precision M4E1 R-ONE AR15 5.56mm 8in M-LOK Threaded Upper Receiver is compatible with AR-15Aero Precision APAR700711M102: Complete Upper M4E1-T 5.56 8in Pistol Barrel RM7.3 Cerakote FDE
