It is made of Hard aluminum 6061 T6
It catches solvents carbon spray patches and stink at the muzzle, when cleaning jobs finished
1/2x28 TPI For 223 9MM .22
1/2x36 TPI For 9mm
5/8x24 TPI For 308
14x1 LH For 7.62x39MM
5/8x32 TPI For 458 SOCOM
13.5x1LH TPI For Glock 9mm
9/16-24 TPI For .40 & 6.5 Grendel
37/64-28 TPI For .45