Velcro utility pouch for belt?

[MagpieTactical]

Do they exist? I currently use a zipped utility pouch for carrying my bag of BBs in the field, but find it can be a bit fiddly using the zips one handed etc.  

 

 

I am Looking for Something like that, but with a flap that comes over the top and is held by velcro so I can just rip it up to open, and smooth back down to close

[Chev Chelios]

7.62 100 rounders or 5.56 200 rounders should fit the bill, usually Velcro and a fastex buckle.