Brownells worked for me. I Spent an enjoyable day at the range last summer zeroing 4 rifles with the replacement front post. Fit them on your rifle at home and be sure to bring a brass drift to adjust the windage. Just take your time and file a little at a time. The sight is a little pricey for what it is but it is the highest one i was able to find. Point of aim is point of impact at 100 yds. with mine. Good luck, Tom