In fact , the original stamped receiver AK - 47 had to be quickly redesigned to use a milled receiver which delayed production .
In fact , the original stamped receiver AK - 47 extended the SKS carbine 's service life .
In fact , the original stamped receiver AK - 47 had to be quickly redesigned to use a milled receiver which delayed production , and extended the SKS carbine 's service life .