MB74 (5.45 x 39mm)

( 0 Reviews )

The MB74 is patterned after the original milled Bulgarian receivers but with the added feature of an integrated AR buffer extension. 

Each 2 pound receiver is machined from a solid 15 pound block of US sourced 4140 steel, then heat treated to an RC41 hardness.

** First samples of this receiver are off the machine and going through first article testing now (Dec 2018) **

See Photo Here: https://www.instagram.com/p/Brd7NElB_Ip/

Barrel is journaled to .866 after heat treat.  Max interference between barrel and barrel journal is .002"  


Current stock: 0

0 Reviews

Be the first to review this product.

Add a Review