Sig P227 Tactical 45ACP Double-Stack Threaded Barrel Night Sights Black Nitron Finish Integral Rail Two 10 Round Magazines

From Sig's website: The new, remarkably ergonomic SIG P227™. It’s a .45ACP that holds 10+1 rounds — but you’d hardly know it from the thinness of the grip. - Full-size and carry lengths - Fits holsters designed for P220R and P226R - .45 ACP Double stack magazines - 14 Round extended magazine available - Double-action/Single-action - Integral accessory rail