The reason I pose this question is that at Blacksheep, I ran my RRV with a Camelbak backpack basically looped to my RRV through the backpack straps and the back of the chest rig. It was super annoying to get out of. Part of me wants to go back to a plate carrier and get a MAP or something, but I like the RRV in every way except for the issue. Technically it's a Conderp MCR1 but I know it's an RRV clone. Would a back plate made by another company work? Or am I just using the rig wrong and there is a way to mount a MOLLE backpack to it?
OP Western Gambit
OP Blacksheep @ Grayling- Alpha 2-4 Medic
OP Fallout- NCR 1-1 Medic
Airsoft GI/Lonex/VFC FMG4
Echo 1 M14
Umarex CO2 USP
Prophet, those two pics are just an RRV with an eagle hydro pouch used as a backpanel. The hydro pouch has built in clips that clip into the RRV shoulder straps, then you can get an RRV strap kit to attach it at the waist. The other options would be either a plate carrier back panel from and eagle plate carrier/mbav or MBSS or an eagle spine MAP pack that clips right in. I don't keep up on replicas much but I'm pretty sure that all the options mentioned above are available from clone companies such as pantac and flyye. If you are mixing and matching brands make sure that the buckles will match up.
The RRV Gimpalong posted is mine from many many years ago. It is just an Eagle Hydro with two of the adapter straps RRVs include snapped onto the shoulder straps. I ran the H strap across the shoulders too. I think I can the MOLLE through the H strap just to keep it a bit more stable. I ended up using zip ties to attach the waist strap to the hydro, but after I sold it I'm fairly sure I realized there is actually a little sleeve/opening along the bottom that the waist strap is designed to go through.
The setup works, but isn't ideal in my opinion. If I was doing it again I'd just run a Camelbak.
I used the Spine Pack for a bit as well and liked it. Found it to be more comfortable than using the hydro from what I remember, but it is bulkier.