The AEM5 is the direct fit replacement for your MK12 SPR. The AEM5 attaches to the weapon via a mount(not included) and a collar that goes over the barrel for alignment. The suppressor mounts via threads on the outside of the mount centering on the adapter fitting. A 20 degree taper on the adapter locks the silencer onto the barrel. The knurling option is a special request that PSD carries in order to have the AEM5 suppressor look like the previous made Ops Model 12 suppressor.
Finish: Black Oxide