Thompson Arms 1927A-1 Deluxe Carbine has a frame and receiver that are machined from solid aluminum and its wood stock is genuine American walnut. This .45 caliber carbine features a 16.5 inch finned barrel, compensator and is available with a blued steel receiver.Action :Semi-Automatic Caliber :45 Automatic Colt Pistol (ACP) Barrel Length :16.5" Capacity :10+1 Trigger : Safety : OAL :41" Weight :13 lbs Stock Description :American Walnut Metal Finish :Blued Muzzle : Receiver Material :Aluminum Sights :Blade Front, Adjustable Rear Barrel Description :Finned Twist : Barrel Length Range :16.00" to 17.99" Weight Range :12.00 lbs to 13.99 lbs Hand :Right Stock Finish Group :Wood Metal Finish Group :Blued/Black