Aero Precision

AERO PRECISION AR15 ENHANCED BUILDERS KIT

AR15 M4E1 Enhanced Upper Receiver Anodized Black

Our state of the art M4E1 platform starts here, with the M4E1 Upper Receiver. The M4E1 upper receiver is a one-piece design combining the handguard mounting platform with the upper itself. Through superior engineering, we have condensed the parts needed to mount a free-floated handguard to a mere 8 screws. Since the handguard mounting surface and upper are of the same forging, not only is it a stronger system, but we are able to make additional lightening cuts to save weight and allow for more efficient cooling.

Ease of installation - Simply insert your barrel assembly into the M4E1 upper, tighten it using the provided barrel nut and wrench, slide your rail on and tighten the rail screws. Within minutes you have a modular, free-floated rail.

• M4 Feedramps
• .250 takedown pin holes
• Lazer engraved T-marks
• Comes assembled, with dust cover and forward assist installed

• Handguard mounting platform is forged into the receiver
• Compatible with Aero Precision Enhanced and Quantum Series handguards but also fits most BAR-system handguards
• Barrel nut and wrench are included
• These uppers are not piston-kit compatible
• Will support barrels with a diameter up to 1"

• AR15 M4E1 Upper Receiver in Anodized Black
• Port Door and Forward Assist installed
• Barrel nut
• Barrel nut wrench
• UPC: 815421022339

M4E1 Stripped Lower Receiver- Anodized Black

The M4E1 Lower Receiver delivers billet aesthetics in a forged package. This custom designed enhanced forging is machined from 7075-T6 Aluminum and compatible with all mil-spec AR15 parts. Aside from the visual upgrades this custom engineered design provides that challenge much more expensive billet options, we have added several functional features to the lower receiver to simplify the assembly process for the at home builder.

• Threaded Bolt Catch Roll Pin - Allows for simple installation of the bolt catch and virtually eliminates the chance to damage the finish during installation (pin included). 1/16" Hex Key required for assembly.
• Integrated Trigger Guard - Eliminates the possibility of breaking the trigger guard tabs by integrating the trigger guard into the lower, creating a stronger more rigid platform to build upon.
• Upper Tension Screw - Allows users to fine tune the fit of the upper and lower receiver using a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
• Threaded Takedown Pin Detent Recess - Allows user to easily install the Takedown Pin detent and spring with the use of a 4-40 set screw (no more launching detents across the room).
• Increased Magwell Flare - Increased the flare of the magwell to aid in quick and efficient magazine changes.
• Marked and milled to accept short-throw safety selectors, but will work with standard selectors as well.

• Stripped M4E1 Lower Receiver
• Nylon tipped tensioning set screw
• Threaded Bolt Catch Pin
• UPC: 815421022315

Aero Precision AR15 Enhanced 15" M-LOK Handguard Gen 2 - Black Anodize

Our Enhanced M-LOK (EM) Handguards provide a lightweight free float design for your custom AR15 build. The M-LOK system allows advanced modularity past the current 1913 picatinny rail system. Machined to mil-spec dimensions and engineered to perfection, this handguard eliminates bulk while retaining strength and stability.

Features:

• 1pc free float design
• Built in anti-rotation tabs
• Scalloped rails
• Continuous top rail
• 1.72" inside diameter (from barrel nut cut to forward end) fits most muzzle devices and 1.5" suppressors
• 1.78" inside barrel nut cut area diameter
• 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

Are you attaching this handguard to a standard threaded upper receiver?
Make sure to select "Yes" under the Bar Barrel Nut option above (shims included). Our handguards use the BAR interface and do not work with a standard barrel nut. If you are using our M4E1 Enhanced Upper Receiver, no additional pieces are needed. Purchased with a handguard, the BAR Barrel Nut is $20 ($40 when sold separately).

*Please note - This handguard is specific to the AR15/M4E1 platform. It is not compatible with the M5 .308/M5E1 platform.

UPC: 815421021288