I bought this RPK with the express purpose of converting it to HPA. Unfortunately, I quit airsoft before I ever got to use it. Includes: - UKArms RPK with original packaging. - wolverine inferno engine - A pro win hopup unit with an slightly longer than standard tight bore. - magpul MOE AKM plum handguard, with hand stop, and sling loop attachment - three AK electric drum magazines. I did a little 'weathering' on the blaster, and painted the original wood stock green. The air line has been routed out of the bottom of the stock.