I'm selling my Adams Arms xlp piston kit with the upgraded Nickel boron bolt carrier in carbine lenght. It will come with one new and one shortened drive rod spring as well as 2 new drive rod bushing. It has about 50 rounds through the system, other than one drive rod spring and the 2 bushing which are new. I tried to make the kit work with the setup I have but unfortunately it won't. Comes with box and all paperwork plus DVD. As far as I know current lead times for this kit are 60 to 90 days. If you want pics I can send them later tonight. Everything is in great shape and fully function with very minimal use. Asking 340 shipped and PayPal. May consider trades for 8" 300 blackout upper. Texting is the quickest way to get a hold of me but calls and pm's here are ok too. 541-five2five-six72three Thanks.