Board Thread:General Nerf discussion/@comment-27306930-20191211061226/@comment-30049823-20191213002714

Okay, there IS a mag spring... but i wasn't wrong. The mag spring only pushes balls FORWARD. They won't actually fall into the chamber once they get to the front of the mag unless gravity is helping them.

Pointing it straight up or holding it sideways or upside-down while priming resulted in the exact symptoms Elliottw described; mostly a lot of dry-fires, except when you could feel a ball getting smooshed in there and had to re-do the prime, which results in a double-feed.

If this thing had a vertical-foregrip riot-shotgun priming mech instead of a slide-action, it wouldn't be prone to these orientation-based mishaps. But it works great for me as long as I keep it pointed downrange and oriented "normally" while priming.