Mounted this on my Rock River NM A4 that I converted to shoot long range competition. It was too long too even fit under the spring collar so I sanded it down on a belt sander but then it struck the star lug under it and had to dremel it down. After that it was GTG. If you are not mechanically inclined is would not buy this.
Pros: good looks, solid, price
Cons: fittment issues
This review was written in the old system and had content requirements that are different than reviews written today.