one of the great things about that mod, is if you have a REPLICA M203 on her, and have RIS handguards, you can actually mount the m203 against the magwell because the RIS of the stock shroud, 95% lines up with the RIS of handguards So you can utilise BOTH parts of the rail and not have the ugly gap between the m203 and the magwell like on my marker

REP4U

__________________