M4E1 Complete Upper, 18" .223 Wylde PROOF RESEARCH® Carbon Fiber Barrel w/ 15" MOD 4 Handguard - Anodized Black

This complete upper is equipped with our cutting-edge Minimal Optical Deflection (MOD) 4 Handguard, paired with an 18" .223 Wylde Carbon Fiber PROOF Research Barrel. Engineered for excellence, this Barrel features unrivaled reliability and precision. Elevate your shooting experience with this precision-crafted complete upper.

The MOD 4 Handguard included with this complete upper receiver features a 7 sided M-LOK® interface allows the user to customize this upper to their exact specifications and needs. Lastly, each of the 4 QD sockets on the MOD 4 utilize a steel liner to ensure a higher shear load and longer service life with the continued use of QD swivels.

INCLUDES:

• M4E1 Threaded Assembled Upper Receiver
• MOD 4 15" Handguard
• 18" .223 Wylde Carbon Fiber PROOF RESEARCH Barrel
• Low Profile Gas Block and Gas Tube
• Product comes assembled
• This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab

M4E1 THREADED UPPER RECEIVER FEATURES:

• New enhanced forging that gives the upper receiver a "billet look"
• New picatinny profile that blends seamlessly with our Enhanced Series Handguards
• M4 Feedramps
• .250 takedown pin holes
• Laser engraved T-marks
• Includes port door and forward assist installed

MOD 4 HANDGUARD FEATURES:

• Full top picatinny rail for optional attachments
• Quick disconnect sling socket at the 3, 6 and 9 o'clock positions
• Compatible with low profile gas blocks
• 1.2" Inside diameter
• 1.5" Outside diameter
• Compatible with mil-spec AR15 upper receivers and barrels

18" .223 WYLDE CARBON FIBER BARREL FEATURES:

• .223 Wylde
• Carbon Fiber Finish
• .750" gas block journal
• 18" Rifle-Length Gas System
• M4 Feed Ramp Extension
• Standard A2 Flash Hider