Picatinny rail cover - Pro Mag Picatinny Rail Cover With Storage Compartment PM147

Product was created to hold batteries, but I purchased this as an option to hold my documents for my SBR in addition to batteries. It does add bulk to your firearm, but not a lot of additional weight. Goes on and comes off fairly easily. When on will not accidentally fall off. I recommend as an on the go storage system for your rifle.
Pros: sturdy and cost
Cons: none

This review was written in the old system and had content requirements that are different than reviews written today.