Guarder SP120 Full Tune-Up Kit for Marui SIG-551/552 kydex The barrel was also given

The barrel was also given a heavier profile

- Reinforced receiver connector prevent breakage

They both come in black but one has a barrel coated in black and one is left chrome

00" and is completely ambidextrous

Guarder SP120 Full Tune-Up Kit for Marui SIG-551/552 kydex The barrel was also givenA complete kit includes ALL parts for upgrading your Airsoft Electric Gun AEG Guarder made this kit with all suitable parts to super tune up your AEG Rifle The combination of difference parts allow an optimal result & performance Hard and rigid material used, including S303 Stainless Steel, Brass, Polycarbonate, Aluminum, Acetal and Steel As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed