Guarder Bore-Up Cylinder Set for SIG 551 / 552 Series Airsoft AEG

For: For SIG 552 / 551 Marui System Series Airsoft AEG.
Material: S303 Stainless Steel/Brass/Polycarbonate/Acetal
Manufacture: Guarder / Distributed by Matrix USA

Application:
Increases stock FPS by 10~30 FPS
Silencer piston head allows a more stealth AEG operation.
Replaces stock cylinder sets for higher power output and performance.
Allow usage longer inner barrel (more air in cylinder).
A great alternative way to increase FPS output without using a stronger spring.
(Stronger spring means lower ROF (rate of fire) and higher rate of wear and tear.)

Kit Includes:
Reinforced Bore Up Stainless Cylinder.
Reinforced Bore Up Ball Bearing Silent Piston Head.
Reinforced Bore Up Stainless Cylinder Head.
Reinforced Bore Up Air Seal Nozzle.

Bore Up?
Bore up Cylinder sets are made to fit all gearboxes just like the regular cylinder sets. However, the cylinder is thinner and made with a bit more precision enabling a bigger air storage in your cylinder. The cylinder head and piston head are of course, a bit bigger as well resulting a higher muzzle velocity and power output.
Recommended for 360 FPS and higher power AEGs
Kit Includes:
Reinforced Bore Up Stainless Cylinder.
Reinforced Bore Up Ball Bearing Silent Piston Head.
Reinforced Bore Up Stainless Cylinder Head.
Reinforced Bore Up Air Seal Nozzle.

Bore Up?
Bore up Cylinder sets are made to fit all gearboxes just like the regular cylinder sets. However, the cylinder is thinner and made with a bit more precision enabling a bigger air storage in your cylinder. The cylinder head and piston head are of course, a bit bigger as well resulting a higher muzzle velocity and power output.
Recommended for 360 FPS and higher power AEGs