oh...for pete's sake...what the hell. i'll educate another one!
IT'S CLEARANCES!!!!!!!!!!!!!!!!!
NOT, "TOLERANCES"!!!!!!!!!!!!!!!!!!!!!!
there...i feel better now!
l-don...both rifles are built to, for all practical purposes, the same "tolerances".
a "tolerance" is either a bi-directional (as in "±) or uni-directional (as in + or -, but not both) zone that a nominal dimension may vary from.
a "clearance" is a DESIGNED INTO THE EQUATION FROM THE GET-GO gap, opening, void or missing material condition that exists between running, sliding, rotating or otherwise contacting during movement parts.
the kalashnikov, while holding the exact same headspace tolerance zone as any other rifle (too small...no chambering of a round. too big...kaboom!) has tons of CLEARANCE designed into it to allow it to function reliably in a dusty, muddy contaminated environment. it is also designed to reliably function while filty over a wide temperature range and using a greatly varying quality of ammunition.
KALASHNIKOV!!!!!
accept NO substitute!
OVER 100 MILLION SATISFIED CUSTOMERS!