that is a Yugo M70ab2 with a type gas block that can be manually turned on & off for the grenade launching capability this gun has , it looks as though the grenade sight / lever on-off that typ is attached to the gas block is missing and your problem could be as simple as turning it back on...
wow , my father gave me this exact rifle when i was maybe 12-13 ( will be 60 this year),it was my hunting rifle, i think it weighed more than i did at time, climbing trees with it on my shoulder was a challenge , anyway everything you speak of in description is 100% correct , it is very...
had 1 in the early 80's , got it at a closeout store for $275.00 new . rare side folder that ruger quit making after the Brady ban . Sold it in late 80's for $800.00 to a relative that just had to have it
most rear disc caliper pistons should turn like a screw counter c.w. to set back flush to install new pads not really sure if this make vehicle's caliper is like that and you should always use brake grease on the part of pad that slides on the caliper/bracket