The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as their M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is forged from 7075-T6 Aluminum" precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed.
Enhanced forging that gives the upper receiver a billet look
Picatinny profile that blends seamlessly with their Enhanced and ATLAS Series Handguards
M4 Feedramps
.250 takedown pin holes
Laser engraved T-marks
Includes threaded forward assist roll pin
Includes port door and forward assist
Stock Notice: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.