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

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