This metal cylinder Type-2 is manufactured by SHS, it is a rear ported cylinder which can be used for any AEG build but is particularily suited to builds with inner barrels longer than 200-350mm.
Polished to a high quality finish this cylinder will provide excellent air compression without uneccessary friction. 
Features
SHS Type-2 Cylinder 
Metal Construction 
Rear-Ported 
Ideal for inner barrels 200-350mm 
Can be used with any barrel length as required
Polished finish