For sale is a set of upgrades for an SRS. Everything you would need to upgrade the drive train part of the gun, the wasp piston comes w/ 3 weighted sleeves and 2 air breaks (lost the standard one sorry) as well the wasp spring guide with 3 spacers This package also includes the snipermechanic Teflon cylinder set Since I replaced all my parts with Edgi parts I no longer need these, and to that note I’ll also include the cylinder head and bolt knob as pictured (stock knob included too) And threw in a stock hop I had laying around $150 shipped conus only PayPal preferred