The FN 545 Tactical carries 15/18+1 rounds of 45 ACP at the ready, giving you the stopping power you need to face any scenario. Made red dot-ready with a crisp trigger; polished feed ramp and chamber; threaded .578"x28 to mount compensators and suppressors; Tritium lamp steel dovetail sights, co-witness with most MRD optics; high-endurance conical striker; interchangeable backstraps; MIL-STD-1913 rail; fully ambidextrous slide stop lever and magazine release. Includes two interchangeable backstraps, two magazines, four MRD mounting plates, owner's manual, locking device, and zippered case.