This is our M10 side cocking upper receiver. It will come with either 1/4″ (shown) or 1/2″ 1913 Picatinney rail. There will be a $25.00 charge for the 1/4 rail due to additional machine time. It is entirely made of steel and has an adjustable front sight. The cocking handle is nonreciprocating and spring loaded. The upper is parkerized which is the traditional finish of the MAC series of 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.