On another forum where they know a lot about these things, it was mentioned that , though he fired it once with a .22 (now that I think, it might not have been with a .22 long rifle cartridge, but a .22 short he used, but he did then fire a .380

Then he changed barrels and fired a 5.7x28 cartridge which destroyed the thing

The plastic as is now just won't hold up.

If we don't count our blessings
We are just wasting our time