Looking to replace your current thumb safety with an ambidextrous one? Well, when looking for which safety to buy BEWARE of those advertised as “Easy To Install” or “Drop-In”. This may be true of an older military issue M1911, but not so for closer tolerance civilian models. A thumb safety is held in the frame by engagement of its shoulder recess and the frame wall. Extending in-wards is the Sear Blocking Stud and this is where the problem occurs. The stud, depending on which model of 1911 auto you have, may have one or two flats and a tangent radius. These areas usually have excess material that requires removal, meaning “Fitted”. Not knowing exactly where to remove the material can cause one to remove too much material making the stud undersize and dangerous. The sear blocking stud immobilizes the sear to prevent firing. So we recommend that fitting and installation be done by a qualified gunsmith to protect all concerned and keep you from having to purchase a second one.
- Jeff
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