This a laser light blockage issue. I own the Saint AR15 and reading the description before purchasing said, MODEL : SAINT Well I assumed it was modeled for my Saint, WRONG...My Saint has a lip on the very front of my lower forearm stock which faces toward the ground, physically blocking my laser light...So I had to carefully drill a small hole through the lip of the stock for the light to shine through which looks and works great...You may be able to use mounting plates or some other mounts but drilling "CAREFULLY" is an easy way to solve this issue..I would prefer a smoother trigger system than it has "Tiny Green Dot". See left picture. Maybe a plate style trigger. I almost returned it because of the trigger style but I'll work with it... Adjustments were very easy along with mounting...Fare price. A.B.Summers...Summerville SC
