here another one. cylinder is steel, piston aluminium, triggerbox aluminium all APS 2 system, hopup, mag, body is vsr. also you can get one with a suppressor for 5 euro more. nozzle need to be elongated and little enlarged at end for good seal, original one sucks.
gunfire.com

SW-10K Sniper Rifle Replica (Upgraded) - tan
Upgraded version Material: metal + plastic Length: 1070mm Weight: 2125g Color: tan Muzzle Velocity: ~500 FPS Engine: Spring-action Manufacturer: Snow Wolf