Looks VERY MUCH like the "Institute of Precise Mechanical Engineering, Izhevsk" styling and molding.
Likely fires 9x39mm ammunition. Likely the SP-5 armor piercing variety from the purpose of the weapon butThat would be correct, if I remember my smattering of Russian rightly. C is S and the symbol resembling "PI" is P.
the site says it uses "??6" (I'm assuming SP-6, which is supposed to be the subsonic version).
The ammo is a 7.62x39mm case with the neck expanded for the heavy 9mm slug.I have an Ex-Russian Community team (1 ex-Naval Spetznaz, 1 ex-Spetznaz/KGB Wet op & 1 ex-KGB) facing off against a cell in Jerusalem next month, they are fond of the AS VAL & VSS Systems, as well as P-6s. I am looking forward to the fireworks... Maybe they will add the CP-3 (SR-3) to their repertoire...Looks like the AS Silent Assault Rifle, minus the suppressor, with more refined selector switch and
machining. Same exact grip, magazine, and foregrip.All versions that I have stats for are for suppressed models. Muzzle Velocity at 950-970 fps. I have no
other information on this round, or on the barrel lengths of the weapons I do have.
Cheers, Jeff!
S.