H&R puts one of two different front sight heights on the BC, the higher .584"(made for the 38-55 Target) is too tall for the WGRS peep, many of us chose to swap it out for the .404" tall front sight. The correct sight that comes on some BCs is .494" which works good with the WGRS, both it and the .404" are available aftermarket from many sources, Brownells, Midway, BA, and others, the .404" being best for any long range shooting if you choose to upgrade the rear sight as well.
Tim