While cleaning my Ruger 22/45 after target shooting, I found a crack in the lower grip frame under the safety button. The pistol only has around a 1000 rounds through it mostly Federal bulk ammo. After contacting customer support and supplying the serial # they immediately e-mailed me a prepaid shipping label. A week later they ship the pistol back with a new lower frame. Didn't tell me what they thought caused it though. Everyone I had contact with was very pleasant and helpful.