"Battery Storage"
I bought this to go onto a dissipator style AR-15, home built. On the box it claims you can store batteries inside of it. I don't know what batteries this was intended to hold, but for me, this fails at one of two jobs it was supposed to do. I attempted to store an 18650 cell inside, but the battery was too big outright (diameter). So, I tried CR123 cells, streamlight brand. Two fit inside, but here's the kicker. The inner tube's diameter is a perfect fit for CR123s, so perfect that air cannot get back in around the battery, and thus one of them is held in by vacuum alone. I wound up compromising the battery getting it back out. After the fact, I wondered if I imagined the battery storage part. Nope! Printed on the box, "Battery storage". This design flaw, in my opinion, is outright inexcusable, not when CR123 and 18650 cells are as prolific as they are. Such an easy design flaw to fix, but somehow overlooked. The only good thing I have to say is, it's comfortable in the hand. I'll use another product instead for this purpose.
