This item is a CLASS III Firearm (or Device) and must be shipped to a licensed dealer in your state. Normally this item will ship within one week of receiving your dealer's FFL & SOT information. If you do not fully understand the process of purchasing a Class III item please feel free to contact us via phone. 
Manufacturer: BLACKHAWK! 
Model: PULSE (72SSRF01BK)
Caliber: .22 LR, .22 WMR, .17 M2, .17 HMR
Full Auto Rated: .22 LR 
Decibel Rating: .22 LR (113.9 dB) .17 HMR (124.2 dB) .22 WMR (126.6 dB)
Diameter: 1.02" 
Length: 6" 
Weight: 5.3 OZ 
Mount: 1/2X28 Direct Thread 
Construction: Stainless Steel, Aircraft-grade Aluminum