I just bought a spring and tool set from BH. I replaced all the springs in my 50 year old Hi-Power and I am glad I did. The trigger pull is lighter, the safety latch's movement is more assertive and the gun received its first complete and thorough cleaning. This afternoon I put about 100 rounds through it with no problems. BH's videos are good and I called BH before I ordered to make sure I knew what I was getting into. Their customer service is good and I spoke with BH's President on my call. Nice contact with a niche company.