I have owned two H&Ks through the years. The only thing I found wrong thiw the H&K is they have a proprietary rail system. That was a bummer. I wanted to get a light an laser for the weapon and I first bought the promag rail adapter to save some money. The promag is big and did not stay on well at all. I paid the extra money for the GG&G slim line rail adapter and it has made all difference. This is the best H&K rail adpater on the market. It has a millspec finish and full lifetime warranty. Buy this rail adapter if you have an H&K and you won't be disappointed.
Pros: Everything
Cons: Nothing
This review was written in the old system and had content requirements that are different than reviews written today.