Building a non-firing BCG?
I'm toying with the idea of building an inert BCG for teaching admin handling, thinking to make it inert by shortening the firing pin. (Idea being to take enough off the FP that only God Himself could hit it hard enough to fire, leaving just enough to hold the BCG assembly together.) If this proceeded, the BCG would of course be marked with safety red or orange to indicate Non Firing status.
Two questions:
1. Are there any potential pitfalls I'm overlooking? I'm well aware that "just because you COULD doesn't mean you SHOULD," and the idea is something where I can tell a student "prove you can handle the four rules and the TTP's with dead metal before we graduate you to Live Iron."
2. IF this idea gets past Question 1... well, three parter: first, what would y'all suggest for a cheap BCG? Second, how much would I need to take off for an "Un-Firing Pin"? Third, if I spritz the BCG with Krylon will it still leave enough room for it to fit and cycle without flaking off and leaving crap that needs to be cleaned out before switching to a live BCG and heading to the range?