Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver 16in Black Medium

Rainier Arms RUC DI 5.56 NATO Partial Upper Receiver 16in Black Medium. Bringing the highest quality parts to the market while offering the best value as well. This partial upper utilizes a direct impingement operating system on their new and improved Rainier Arms Select barrel. Pairing up with their Urban Combat Rail to provide shooters with a rock solid handguard that can take any abuse. Throw in your favorite charging handle and bolt carrier group and you are good to go Specifications for Rai