The Spike's Tactical SD1 Fake Can gives you the looks of having a 10.5" suppressed rifle but doesn't come with all of the expense and paperwork that's required for the real thing. This is how it works; The SD1 shrouds back over the barrel of your rifle concealing part of it inside of the SD1. This is what gives the illusion of a suppressed SBR and of course, no stamp is required. Keep in mind, this fake can is just for cosmetic looks and does not provide any sound suppression whatsoever. The SD1 should only be used with barrels with Carbine length gas systems.