Rare, and very few available if you are lucky to find one. My mentor has one and I was told it has several feeding problems from the box. He got it used, sold by the prev owner due to some feeding problems. He met a Colt gunsmith @ Camp Perry and was told that there was indeed a feeding problem related to the ramp. He sent the pistol to Colt, reworked the ramp and it shoots perfectly. Coincidentally, he saw another used unit from a dealer and bought it after meeting the gunsmith @ Camp Perry. This one has the reworked ramped. A good old friend of him saw it and bugged him until he agreed to sell. He kept the first one and still shoots the gun once in a while.