The material is 304 Stainless Steel

due to tight inner diameter

and is put directly into the shotgun by the trigger assembly

Manufacturer: PolarStar (OEM: MAC)

Additional gearbox features include a modular spring guide system that will allow the spring to be changed without completely disassembling the gearbox

Nine Ball ROUND Trigger OMEGA GOLD speedsoft The material is 304 StainlessFeatures Precision machined from aluminum, made in Japan "Omega" rounded profile trigger face Hard finish adds overall durability Straight from the source of Airsoft itself, Japan, Nine Ball produces some of the highest quality aftermarket parts available. The Omega Round Trigger is, of course, no different. Compatible with the ever popular Hi CAPA series of handguns, the Omega trigger is constructed using high quality aluminum, both for durability as