Rgun uppers?

[Shockeruti]

Looking to build my first at. Ran across rgun uppers. Looking at a 16in superbull upper, with the long RGQ handguard. About half way down the page here , http://www.rguns.net/rifles/rifles-s...uperBull.shtml

Anyone got any info / experience?

[War Machine]

https://Www.redxarms.com