MIM Parts Question - 1911Forum
May 9, 2024 · The problems with MIM parts in guns boils down to choosing some parts that are incompatible with MIM (Colt extractors come to mind)and bad manufacturing processes that stem …
What are "MIM" internal parts? - 1911Forum
Aug 31, 2001 · MIM is Metal Injection Moulding. I't a step up in the "sintered metal" process of producing a part that is close to if not dimensionally correct without extra machining. It works like this; powdered …
When did Tisas stop using MIM parts - 1911Forum
May 20, 2024 · How can I tell if my Tisas has MIM parts? Of my four Tisas models three of them say "TISAS KNOXVILLE TN" and one says "SDS KNOXVILLE TN". I suspect that the model labeled …
Tias 1911s, MIM and US made 1911s - 1911Forum
Jun 21, 2024 · I'm new to the 1911. I Bought my first a month ago, a Garrison 5", 45. Since joining this site a few months ago, my knowledge of the 1911 has expanded. I know many members own Tisas …
1911 Mim extractor, replace or not? - 1911Forum
Oct 14, 2025 · MIM is powdered metal pressed into near net shape, then sintered (heated enough to melt only the outer surfaces of each powder particle) This precludes grain growth throughout the …
What does MIM mean? - 1911Forum
Aug 19, 2003 · MIM (like cast) is subject to casting voids (air bubbles) defects as well as metal powder size variation defects, just to name the two biggest. IMO, it is not suitable for use in long, thin parts …
MIM parts: Sig Sauer 1911 X Line - SIG Talk
Nov 25, 2024 · Does anyone know which parts are MIM on the New, or any, Sig 1911s? The reason I’m asking is the right side ambi safety broke on me today while dryfiring. I only have 100 rnds through …
MIM parts? - 1911Forum
Apr 5, 2025 · MIM, forged, machined, cast—they can all be done right, and they can all be done wrong. Kimber and Smith of certain eras were bad MIM. Metal sintering reduces dimensions and still …
MIM parts not a problem for my TRP - 1911Forum
Jan 21, 2025 · MIM parts made with high quality steel, using the correct forging standards are just fine. Plus they're fitted into a very high quailty pistol so not surprised. I would be SURPRISED if they failed …
Does Springfield use MIM internal parts? - 1911Forum
Jan 8, 2010 · At the same time, I have bought 4 Springfield 1911's in the last several years, and 3 out of the 4 have experienced MIM parts that simply broke, chipped, or shattered under regular stress and …