AK Milled Receiver Block for all Bulgarian milled receivers and pre-ban milled receivers with the lower tang removed. Includes 1 1/4" sling mount. Length 1.480" F.B.E.R. Weight 190g ( 6.8 oz) Using this Adapter with the 'Pig-Nose' adapter, you can mount a CAR-15 style stock to your AK. *** What is the difference between milled & stamped receivers? *** There are two major differences between a milled receiver and a stamped receiver. A milled receiver is machined out of one solid piece of metal, making it heavier than the stamped yet more accurate. The stamped receiver is made out of several sheets of metal that have been riveted together. While a stamped is lighter it is also less accurate than the milled receiver.