This is a great bore guide that works on all ar10's and it's clones. I've used this on my pof p308 and my armalite ar10 sass with no problems at all. Fits securely thanks to the o-rings. It would have been nice if wheeler could have included some extra O-rings, as the solvents I use are already wearing into the rubber of the O-rings. Overall a great product.
Pros: Great fit, sturdy brass construction, rubber orings
Cons: heavy
This review was written in the old system and had content requirements that are different than reviews written today.