Spikes Tactical Fake Can - Model CAR1 1/2 x 28in. 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 CAR-1 shrouds back over the barrel of your rifle concealing part of it inside of the CAR-1. 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 CAR-1 should only be used with barrels with Carbine length gas systems. Specifications for Spikes Tactical Fake Can CAR1: Manufacturer: Spikes Tactical Caliber: 5.56x45mm NATO Fabric/Material: 6061 Aluminum Bar Stock Color: Black Threads per Inch: 1/2x28 Weight: 6.6 oz Condition: New Fit: 1/2x28 Thread Adapter Finish: Anodized Finish Country of Origin: USA Package Contents: Spikes Tactical Fake Can CAR1 Spikes Tactical SAFC01N: Fake Can - Model CAR1 1/2 x 28in