2.25 total length takes 14.5 barrels to 16.1 for legal rifle barrel length requirements.All critical alignment features machined in one set up.Compatible with common.900-24 silencer mounts like the q plan-b and rearden mfg atlas..30 caliber bore.13/16 rear hex for easy installation and removal.Cnc machined from 17-4 ph stainless steel.Heat treated to h900 condition.Substantial flash reduction over oem part.Designed to serve as sacrificial blast baffle.Square shoulder.360 degree port orientation-no shims required.2.7 ounces, 3/32 pin compatibleModel: EclipseMaterial: Stainless SteelThread Pattern: 1/2"x28