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The Yugo version of the SKS MAY have a grenade launcher, and a gas shut off valve that is used when launching rifle grenades. That valve is well known to wear and erode, which results in some gas leaking when weapon is fired. If so, it may only cycle with "hotter" ammo. Try cleaning the weapon chamber thoroughly, ensure that the gas port is clear, weapon properly lubed- and visit website for suplusrifle.com for some info on dealing with the gas shut off valve.

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15y ago

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