Ti-Rant 45 "S" Suppressor "s" for Short. SPECIFICATION INFORMATION CALIBER RATING .40 S&W, .45 ACP, 9mm COLOR Black LENGTH 6.41" DIAMETER Diameter 1.38" WEIGHT 9.2 oz FULL-AUTO RATED Not Full-Auto Rated MANUFACTURER AAC BUILD MATERIAL 17-4 Stainless Steel, 7075 T6 Aluminum, Titanium The Ti-RANT series are ultra-high-performance sound and flash suppressors for today's 9mm and .45 Auto handguns. Advanced material selection gives the Ti-RANT series unequalled durability despite compact dimensions and light weight. For 2011, users will be able to remove the 17-4 PH stainless steel and hard coat anodized 7075-T6 aluminum alloy baffles from the Grade 9 Titanium tube for cleaning and maintenance using a supplied end cap spanner. Class-defining sound reduction is worthless if your silenced handgun is unreliable; To ensure reliable functioning with all popular host pistols, the Ti-RANT series incorporates a second-generation A.S.A.P (Assured Semi Automatic Performance) booster system. The fully integrated A.S.A.P. System enables flawless semi-automatic operation and can be quickly and easily disassembled for service by the end-user without the use of tools. For 2011, the previously military-only "Short" versions are available for civilian purchase. For added sound and flash reduction on these short models, a wet charge of 5cc's of water will increase performance by up to 30% and will remain effective for 20 to 50 shots.