If you don't need the threaded part for the muzzle device you could get one of these for a few bucks less
AK Gas Block Front Sight Combo - Finished #AK-P58
THATS THE SAME AS THE UNFINISED ONE ONLY ITS FINISHED. THERE IS A FAIR AMOUNT OF WORK IT LOOKS LIKE TO FINISH ONE. REALLU WISH THE WOULD MAKE ONE TO FIT A BIGGER BARREL OD. OR SOME ONE WOULD MAKE A CHEAP ONE FOR THE 12 GUAGE SAIGA.