Place the charging handle into the hole in the rear of the receiver where the bolt will go; make sure that it is aligned, which it will be if it slides into place. And looking cool matters. Specifically, the new cartridge had to fit within the existing AR platform and fire heavier bullets at subsonic speeds. The .458 SOCOM feeds from a single position in the magazine, and the magazine holds 10 rounds. Your email address will not be published. We have also included a buyers guide discussing what factors you need to consider when choosing an AR-15 .458 Upper Receiver. 100-040-982 Complete Upper , 6mm ARC , 20 stainless barrel. Ever since the M16 and 5.56 NATO was adopted way back in the early 1960s the Army has been trying to replace them with something newer, better, and more capable. There are a couple standout features on this upper receiver: First, the handguard. Currently offered in straight flute. Best Mossberg 500 Heat Shields [Ultimate Buying Guide], Cross Machine Tool INC AR15 CMT Billet Upper Receiver .458 SOCOM, Anderson Manufacturing .458 SOCOM Upper Receiver, Aero Precision AR15 XL Stripped Upper Receiver, The Best AR-15 Barrels: 2022 Complete Buyers Guide, Best 9mm Ammo in 2021 [Self-Defense & Target], 6.5 Creedmoor vs .243 Win Cartridge Comparison, Best .410 Pistols: Shotgun-Revolver Goodness, The US Armys Newest Caliber: .277 SIG FURY/6.8x51mm, Thickened receiver wall for added rigidity, 5-axis machining process for a more accurate build, Lightweight and durable Bilelt T6 7075 aluminum construction, If youre a beginner, you might need a professional to install, Compatible with many Mil-Spec upper and lower AR-15 parts, Durable forged 7076-T6 aluminum construction, Excellent AR-15 upper receiver for large ammunitions, Smooth, corrosion resistant anodized finish. You gotta bump that caliber up. Last two things, then well get out of here: The muzzle brake is good. You can find out more about a product by reading reviews.

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