Aero Precision M4E1 Enhanced Gas Piston Complete Upper with 14.5" 5.56 Mid-Length Barrel & 12.7" Enhanced M-LOK Handguard - Anodized Black - APAR100217M72

Aero Precision APAR100217M72: This contract overrun upper receiver is built around the M4E1 Enhanced upper receiver and is powered by a superlative arms gas piston system. This gas system offers a range of adjustments and provides a different operating system that results in less upper receiver fouling than traditional direct impingement systems.

This upper receiver includes a pin and welded VG6 Epsilon 5.56 muzzle device providing a decrease in muzzle rise and recoil with the added function of bringing the overall barrel length to 16".

INCLUDES:

• M4E1 Enhanced Upper Receiver
• 12.7" Enhanced Handguard
• Dimpled 14.5" 5.56 CMV Mid-Length Barrel
• VG6 Epsilon Muzzle Device (Pinned and Welded)
• Superlative Arms Mid-Length Piston System
• Assembled BCG w/ Superlative Arms Piston Bolt Carrier
• Aero Precision Ambidextrous Charging Handle

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
• 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

GEN 2 ENHANCED HANDGUARD FEATURES:

• 1pc free float design
• 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

14.5" 5.56 MID-LENGTH BARREL FEATURES:

• Chamber: 5.56
• Length: 14.5"
• Twist: 1 in 7
• Threading: 1/2"x28
• Material: 4150 Chrome Moly Vanadium
• Finish: QPQ corrosion resistant finish both inside and out
• Gas Block Journal: .750
• Dimpled Gas Block Journal
• Gas System Length: Mid
• Weight: 26oz
• M4 Barrel Extension