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Questions & Answers
Is it the DMR heavy profile barrel and does it have the adjustable gas block Expert Answer

The Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver does have the DMR profile barrel. However, it does not have an adjustable gas block.

by Hunter, Gear Expert, August 9, 2022
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Ready to go by Bassman, Verified Owner, December 4, 2024
Fast shipping, looks great out the box, fits perfect ready to go
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Product Info for Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider

Upgrade the performance of your AR15 build with this 6.5 Grendel Complete Upper Receiver. Designed to be a low recoil/high accuracy cartridge, the 6.5 Grendel is ideal for those looking to stretch the legs of their AR15 rifle, with proven results at 1000+ yards.image

Specifications for Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider:

Manufacturer: Aero Precision
Caliber: 6.5mm Grendel
Overall Length: 30 in
Barrel Length: 20 in
Barrel Profile: M4
Gas System Length: Rifle Length
Barrel Twist Rate: 1-8
Threads per Inch: 5/8x24
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: AR-15
Condition: New
Fabric/Material: 7075 T6 Aluminum
Attachment Type: Picatinny
Gas Block Journal Size-Diameter: .750 in
Gun Rail: Picatinny
Gun Make: AR Platform
Included Accessories: None
Bolt Carrier Group Included: No
Charging Handle Included: No
Weight: 70 oz
Magazine Included: No
Mount Type: Picatinny
Country of Origin: USA

Features of Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider

  • M4E1 Enhanced Upper Features:
  • Laser engraved T-marks (Anodized only)
  • Comes assembled, with port door and forward assist installed
  • Accepts standard AR15/M16 components
  • Handguard mounting platform is forged into the receiver
  • Works with Aero Precision handguards but also fits most BAR-system handguards
  • Enhanced Handguard Features:
  • Built in Anti-Rotation tabs
  • Scalloped rails
  • Continuous top rail
  • 1.78in inside diameter fits most muzzle devices and 1.5in suppressors
  • Compatible with low profile gas blocks
  • Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
  • Additional milling along flats to aid with gripping and add visual appeal
  • New profile for the continuous picatinny top rail

Package Contents:

  • Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider
  • M4E1 Enhanced Assembled Upper Receiver
  • Enhanced Handguard of choice
  • 6.5 Grendel 20in Stainless Steel Rifle Length Barrel
  • .750 Low Profile Gas Block and Rifle Length Gas Tube
  • A2-style Flash Hider
  • Product comes assembled

Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision M4E1 Complete Upper, 20in 6.5 Grendel Stainless Steel Barrel, EM15 Gen 2 HG, Anodized Black, APAR640232M53 , MPN: APAR640232M53 , UPC: 840014603398 , Code: 29D-UFH-EN1-APAR640232M53
  • Aero Precision M4E1 Complete Upper, 20in 6.5 Grendel Stainless Steel Barrel, EM15 Gen 2 HG, FDE Cerakote, APAR640252M53 , MPN: APAR640252M53 , UPC: 840014603411 , Code: 29D-UFH-EN1-APAR640252M53

Aero Precision M4E1 Enhanced 20in 6.5 Grendel Complete Upper Receiver with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Aero Precision M4E1 Complete Upper, 20in 6.5 Grendel Stainless Steel Barrel, EM15 Gen 2 HG, FDE Cerakote, APAR640252M53 , MPN: APAR640252M53-DEMO , Code: 29D-UFH-EN1-APAR640252M53-DEMO
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