Upper Receiver – OEM Top Cocking with Barrel for M10 9mm or 45 acp.


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This is an original OEM Top Cocking Upper Receiver complete with the reinforcement ribs and Cobray© Logo.  The only modification from the original design is the inclusion of the hole for the barrel roll pin in the trunnion.  We found a limited and old supply of the original sheet metal body and front sight and welded in our trunnion.  This upper will work with 9mm Full or Semi Auto guns.

The 9mm barrel is the standard length with standard threads of 3/4-10 TPI.   The .45acp is the standard length with standard thread of 7/8-9 TPI.  They are pinned in place and made of CrMoV MIL-B-11595 material with 6 – groove, 1:10 twist and precision air gauged with inert gas vacuum stress relieved after button rifling process. The finishing is manganese phosphate, the traditional dark gray/almost black parkerizing of the MAC series guns . These were profiled on centers to provide accuracy between bore and profile which has been a problem we’ve experienced with other manufacturers’ barrels in the past.

This item is a custom order item, please allow at least two weeks for shipping.

Note:  Lower receiver and bolt assembly not included.


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