40 cal. This was a recent purchase. I'm the second owner. Original owner said round count was approx 500 and I've put an additional 100 rounds through it. It's in great condition, very accurate and I had no FTF's or FTE's. I really like the gun and the LEM trigger - just want something a little more concealable. Original case, paperwork, lock, 1-9 rnd mag and 1-12 rnd mag. Only looking to trade for a P2000SK LEM 40 cal.