SBR Barrels and Upper Receivers

HK UPPER MR762 A4 7.62X51 13" BLK

Heckler & Koch MR762 A4 Upper Receiver, 308 Winchester/7.62 NATO, 13" Barrel, Threaded 5/8X24, M-LOK Handguard, Anodized Finish, Black, Adjustable Gas Block, Includes Bolt Carrier Group, Buffer Weight, and Buffer Spring 51001919 Model: MR762 A4 Upper Receiver

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