ICS SIG 551, upgraded, for sale No trades please Internals: ICS MK11 6.04x458mm inner barrel Stock hopup (proprietary to model) H nub Maple leaf macaron 75 degree bucking M120 spring Shs 15t lightened piston Prometheus pom bearing piston head G&g full cylinder, brass G&g 18:1 gearset Modify shims ICS turbo 3000 motor, 19 tpa I believe Wired deans GATE Nano ASR mosfet, dual signal wires Cleaned, shimmed, lubed, AOE corrected with washer. Stock: cylinder head, nozzle, tappet plate, bushings, gearbox shell, spring guide, trigger and contacts. Externals: PTS Battle comp 1.0 ICS scope mount base (rail) Stock iron sights Magpul MOE vfg - real Inforce 400 lumen WML, repro. I have a streamlight IR filter I can include for extra that fits this. 4x MAG 100rd midcaps, heavily modified. Mag couplers removed, screws rerouted internally, bb catch filed to fit ICS model, mags glued and taped. These actually fit *snugly* in an elastic m4 pouch, like a JPC, etc. Everything is solid, stock is secure and locks open and closed. Note: right fire selector is missing, does not affect functionality whatsoever. Shooting 406-408fps, range 250ft measured with .32g bbs, laser rangefinder checked. 17-18rps, measured with 11.1 20c lipo, slightly faster with higher c rating. Great intermediate gun, or for anyone looking to make a Swiss loadout! 220 obo, shipping and fees included. No trades please