This is the item that made my CA33E a beast back in the day. It's a vital component which will allow you to add something as simple as a vertical grip or as advanced as a MADBULL Grenade launcher and some advanced laser systems. It looks great, and really makes your CA33E a lot more versatile.
It is a TAD wobbly, though this is really only noticeable if you attach a vertical grip. To fix this I used a little tape on the connector to make it a tighter fit, and I never had a problem with it after that.
Easy to remove/attach.
Adds HUGE versatility to a pretty simple system.
Really completes the CA33E.
Not a perfect fit, needs a little tuning.
Only allows modification under and on the sides of the front half the weapon, no use for scopes of any kind.