Test fired 25 rounds after completing the conversion. Still need to perform the dye job on the receiver, cut vent holes in receiver and remark selector switches. Perfect function. Fired another 400 rounds after the initial test fire. Flawless. Amazingly accurate. Check the posted pictures of the test fire target w/ 25 rounds.
http://sites.google.com/site/2010umpproject/
I use the the HDPS conversion block. I also have the grease gun conversion and the HK lower. The grease gun conversion works well, but at the moment and in the video, I am using all original HK lowers and mags.
cfp90pack 1 year ago