Who here has personally had a MIM part fail?

**zachomega** · July 15th, 2020, 02:57 PM

Originally Posted by Bang

Circa 2009, Beretta 92 and similar were experiencing broken slides. Have no idea if they were MIM'd. Likely not, but had they been, the blame would have been on the MIMing when it may have been the design even when executed in treated steel. A local range owner blamed steel ammo and bans it.

Pistol people?

-Zach

**RockIsland** · July 16th, 2020, 07:21 AM

Originally Posted by RockIsland

Not me but when my kid was an RSO, he sent me a pic of a new Sig .22 that had the front 1" of the slide crack off.

I think I may have posted it here somewhere but I must have deleted it off of my phone.

Found it!

**ar15jules** · July 16th, 2020, 07:30 AM

Coworker had a MIM gas key break within the last week in an M and P sport. This ISN'T to say that non-MIM gas keys don't shit the bed every once in a while. From what I have been told, his wasn't staked properly and being loose is bad juju for any key.

**zachomega** · July 16th, 2020, 09:09 AM

Originally Posted by RockIsland

Found it!

The Walther p22 used to be notorious for cracking slides. No idea how it is made. But what it was made out of was probably the bigger issue.

-Zach

**Bang** · July 16th, 2020, 02:09 PM

Re the Sig .22 slide... single happening, or a recall matter? I am suggesting that the potential for an occasional failure would need analyzing on many levels. Design flaw, metallurgical problem, and so on.