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Questions & Answers
Is the flash hider threaded? I mean it usually says pinned and welded.

When its pinned and welded its typically to be in compliance (in states) with 16" minimums. A Pistol or SBA has little to no reason to have pinned and welded..

by Inc0g N33t0, Verified Owner, November 11, 2025
Customer Reviews
Helpful Positive Review
Great upper by Terron Stevens, Verified Owner, September 18, 2024
Good quality ar upper at a more than fair price.the upper pair well with psa and of course aero lower. No probelms after only 200 rounds barrel is accurate for 10.5 inch
2/2 found this helpful
Helpful Positive Review
Great quality by honkydong, October 27, 2023
I’m leaving this review just because of the one star review left by a previous customer. This is a complete upper charging handles and bolt carrier groups are never included with complete uppers. He’s just inexperienced.
54/65 found this helpful
Helpful Positive Review
Great buy! by Grizz, Verified Owner, September 12, 2024
Aero precision uppers are always a great product. You’ll hear people complain about quality control but speaking for myself the few I’ve bought from Optics Planet, have been excellent fit and finish and run flawlessly! Don’t try to compare them to a ...
Read More...
1/1 found this helpful
Helpful Positive Review
been mostly good for 500 rounds by Eric watt7, Verified Owner, March 3, 2024
Handguard geels great. Much wider than my other psa slim line handguard so feels like much more of a solid grip. Lightweight and looks great. First range trip(100rounds) had 2 failures to feed a new round but that has since gone away. Been running sm...
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6/6 found this helpful
Helpful Positive Review
Aero Precision upper by C Davis, Verified Owner, July 27, 2024
Easy to install, very good quality. So far, so good
1/2 found this helpful
Helpful Positive Review
Aero precision 10.5 upper by Vizi, Verified Owner, April 3, 2024
Great price aero makes great products for a good price fast shipping will buy again
5/5 found this helpful
Read All 11 Reviews
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Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider

This Upper Receiver Handguard Combo now includes our Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets, enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. Anti-Rotation Tabs. Feed Ramp Extension. Scalloped Rails. Continuous Top Rail.image

Specifications for Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider:

Manufacturer: Aero Precision
Caliber: 5.56x45mm NATO
Barrel Length: 10.5 in
Gas System Length: Rifle Length
Barrel Twist Rate: 1-7
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Gun Model: AR-15, M16
Condition: New
Fabric/Material: 7075 T6 Aluminum
Attachment Type: Picatinny
Handguard Length: 9 in
Gun Type: Rifle
Gun Make: Aero Precision, AR Platform
Included Accessories: Standard
Barrel Material: 4150 Chrome Moly Vanadium
Gas Block Journal Size-Length: 0.75 in
Bolt Carrier Group Included: No
Charging Handle Included: No
Magazine Included: No
Mount Type: Picatinny
Country of Origin: USA

Features of Aero Precision M4E1 AR-15 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider:

  • Forged from 7075 T6 aluminum;
  • Precision machined to M4E1 specs;
  • M4 feedramps;
  • Matte black hard coat anodized Mil 8625 Type 3 Class 2;
  • 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;

Features of Enhanced Handguard:

  • 1pc free float design;
  • Rail is Machined from 6061-T6 Aluminum;
  • Built in Anti-Rotation tabs;
  • Scalloped rails;
  • Continuous top rail;
  • 1.78" inside diameter fits most muzzle devices and 1.5" 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

Features of 5.56 Rifle Length Barrel:

  • 4150 CrMoV w/ QPQ finish;
  • 1/7 twist;
  • .750 gas block journal;
  • Rifle length gas system;
  • M4 Feed Ramp Extension;
  • HP and MPI tested;
  • Standard A2 flash hider

Package Contents:

  • Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider
  • Enhanced Handguard
  • 5.56 Rifle Length CMV Barrel
  • Low Profile Gas Block and Rifle Length Gas Tube
  • Barrel Nut
  • Wrench

Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider Orderable Models

List of Orderable Models

  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640221M2 , MPN: APAR640221M2 , UPC: 815421022667 , Code: 29D-UFH-M4E1CMRB1-APAR640221M2
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in Quad Rail Handguard, No BCH/CH, Anodized, Black, APAR640221Q2 , MPN: APAR640221Q2 , UPC: 815421022728 , Code: 29D-UFH-M4E1CMRB1-APAR640221Q2
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in Quad Rail Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222Q2 , MPN: APAR640222Q2 , UPC: 815421022810 , Code: 29D-UFH-M4E1CMRB1-APAR640222Q2
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222M2 , MPN: APAR640222M2 , UPC: 815421022759 , Code: 29D-UFH-M4E1CMRB1-APAR640222M2

Aero Precision M4E1 AR-15 10.5in 5.56 Rifle Barrel Complete Upper Receiver with Flash Hider Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640221M2 , MPN: APAR640221M2-EDEMO , Code: 29D-UFH-M4E1CMRB1-APAR640221M2-EDEMO-RE-A
  • USED Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in Quad Rail Handguard, No BCH/CH, Anodized, Black, APAR640221Q2, EDEMO1, Used, Condition Fair , MPN: APAR640221Q2-EDEMO1 , Code: 29D-UFH-M4E1CMRB1-APAR640221Q2-EDEMO1
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in KeyMod Handguard, No BCH/CH, Anodized, Black, APAR640221P2 , MPN: APAR640221P2 , UPC: 815421022698 , Code: 29D-UFH-M4E1CMRB1-APAR640221P2
  • DEMO, Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Anodized, Black, APAR640221M2 , MPN: APAR640221M2-DEMO , Code: 29D-UFH-M4E1CMRB1-APAR640221M2-DEMO
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in KeyMod Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222P2 , MPN: APAR640222P2 , UPC: 815421022780 , Code: 29D-UFH-M4E1CMRB1-APAR640222P2
  • DEMO, Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, Magpul Cerakote, Flat Dark Earth, APAR640222M2 , MPN: APAR640222M2-DEMO , Code: 29D-UFH-M4E1CMRB1-APAR640222M2-DEMO
  • Aero Precision M4E1 Complete Upper Receiver, AR-15, 10.5 in Rifle Length Barrel, 9 in M-LOK Handguard, No BCH/CH, w/ Sig Sauer ROMEO5 1x20mm Red Dot Sight, Anodized, Black, APAR640221M2-KIT1 , MPN: APAR640221M2-KIT1 , Code: 29D-UFH-M4E1CMRB1-APAR640221M2-KIT1
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