I have a jewell 2 stage in my Armilite AR10 for 10 years. The last 2 years have interminite problems with it releasing hammer.Drove 2 hrs to range today and after 3ed shot it stopped working. After playing with it and doing something? after 2 minunites it worked fine for 90 rnds.DO not trust it. Replace with another jewell or something better? Blaster