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Aero Precision AR15 18" 5.56 Complete GEN 2 Enhanced Quad Rail Upper AR-15
Aero Precision AR15 18' 5.56 Complete GEN 2 Enhanced Quad Rail Upper AR-15

Aero Precision AR15 18" 5.56 Complete GEN 2 Enhanced Quad Rail Upper AR-15

Part Number:APAR640251Q8
On sale: $498.95
Retail Price:$534.99
You Save:$36.04(7%)
In Stock.

Choose Options

Add QD Swivel [+$8.95]
Add Milspec Charging Handle [+$12.95]
Add Aero Ambi Charging Handle [+$79.99]
Add Aero Milspec Phosphated M16 BCG [+$129.95]
Add Aero Nitrided M16 BCG [+$129.95]
Aero Precision AR15 18" 5.56 Complete GEN 2 Enhanced Quad Rail Upper AR-15


This 18" Complete Upper 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.

M4E1 Enhanced Assembled Upper Receiver
Enhanced Gen2 Quad Rail Handguard
18" 5.56 Rifle Length CMV Barrel
Low Profile Gas Block and Rifle Length Gas Tube
Upper comes factory assembled
This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons.

M4E1 Upper Features:
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
Barrel nut and wrench are included

Enhanced Quad Rail Handguard Features:
1pc Free Float design for enhanced accuracy
Rail is Machined from 6061-T6 Aluminum
Built in Anti-Rotation tabs
Scalloped rails
Continuous top rail and forward 90 degree picatinny rail sections for accessory placement while maintaining lighter weight and easier grip surface at the rear.
1.78" inside diameter fits most muzzle devices and 1.5" suppressors
Compatible with low profile gas blocks
Gen 2 Feature - Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
Gen 2 Feature - Additional milling along flats to aid with gripping and add visual appeal
Gen 2 Feature - New profile for the continuous picatinny top rail

18" 5.56 Rifle Length Barrel Features:
5.56 Nato 18" Rifle Length Barrel
4150 CrMoV w/ QPQ finish
1/7 twist
.750 gas block journal
Rifle length gas system for soft recoil
M4 Feed Ramp Extension
HP and MPI tested
Standard A2 flash hider

Shipping to FFL Dealer Required No
Made In America? Yes
Platform AR15
Series M4E1
Caliber 5.56 NATO
Barrel Length 18" Sniper
Weight: 68.3 oz

Shipping to FFL Dealer RequiredNo
Made In America?Yes
Caliber5.56 NATO
Barrel Length18"
FinishAnodized Black
Weight(s)Total Upper Weight:  66.25 oz (w/o BCG and Charging Handle)

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