Put one in my AK...
Got rid of some annoying trigger slap.
Put one in my heavy-barreled 10/22. Big difference, scope crosshairs stayed on target as gun fired, and the recoil, along with mechanical noise, dropped considerably.
As long as it doesn't interfere with form or function, give it a try on the SKS.
I won't, however, recommend them for handguns using the Browning tilting barrel action(1911, BHP). They are sacrificial, at best.