The passive radiator has an aluminum sandwich dome plus a rigid multi-branch chassis. The maximum tour with the passive radiator is ± five.5mm. The general diameter on the passive radiator is 220 mm. A version with the SIG P220 handgun produced by SIG Sauer by using a reversible journal release, https://jasperghjgd.wssblogs.com/27009106/top-latest-five-sig-p220-10mm-holster-urban-news