16" 458 SOCOM Upper AR 15 Assembly Rifle Length Rail

*Milspec forged aluminum upper receiver with forward assist and dust cover assembly installed. Matte black hard coat anodized Mil 8625 Type 3 Class 2. One large single Feed Ramp for big bore cartridges. Forged from 7075 T6 aluminum. This receiver has been correctly modified around the ejection port to allow for clearance and proper ejection of the 458 SOCOM cartridge.

*AR15Part.com 12" Rifle Length Narrow Profile Free Float Rail. Very comfortable and very light weight. M Lok slots run the entire length of our rail at the 3, 6, and 9 o'clock postions. M Lok compatible picatinny rail sections NOT included but are available for purchase on our website if needed. M Lok compatible picatinny rail sections easily attach to our rails for adding accessories like bipods, flash lights, grips, lasers, etc.

*ER SHAW CUSTOM 16” 458 Socom 416R Stainless Steel Barrel with 1x14 twist and 5/8x32 Muzzle Threads. ER Shaw barrels are extremely accurate, high performance barrels with a long, exceptional reputation for quality.

*.875 low profile gas block.

*Carbine Gas Tube.

*Compact competition muzzle brake with crush washer.

*It is HIGHLY recommended to run this upper with a D&H Tactical 458 Socom Magazine for zero feed issues and our 458 bolt carrier group. It is a 458 Socom bolt carrier group with a genuine 458 Socom bolt assembly. It is highly recommended to use our brand bolt with 458 Socom uppers/barrels to eliminate feeding and extraction issues that are common to 458 Socom's that do not use this bolt. Our 458 Socom bolt assembly has MANY specific, unique and purposeful features about it that other brand 458 Socom bolts do not have. These features are absolutely critical for reliable, consistent performance in 458 Socom uppers. We have them available for purchase on our website.