I have a brand new RIA 1911. It came covered in cosmoline( I think). I disassembled it according to yahoo videos and reassembled. The problem I have is that the thumb safety doesn't work properly. When I engage both the grip safety and engage the thumb safety, the gun will fire when trigger pulled. If I just leave the thumb safety on, and don't engage the grip safety, it wont fire. I haven't seen this exact problem on the web, and was hoping someone could offer some advice.
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RIA 1911 safety issue
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Lacking photo evidence showing otherwise, I am going with this theory.
If the thumb safety won't go all the way up into the slide cut, then it is likely stopping against the sear.
The good news id that it's just a little bit more fitting to get the safety to move all the way up and properly block the sear.
IF the safety is going all the way up and the gun will fire, then the safety was over-fitted and will either need to be welded up or replaced.Randall Rausch
AR work: www.ar15barrels.com
Handguns: www.handgunbarrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Most work done while you wait on a scheduled shop visit.Comment
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Improper assembly I would think. Specifically, check the sear assembly.
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In what way can you improperly assemble a 1911 and still have the trigger/sear function, but not the thumb safety?Improper assembly I would think. Specifically, check the sear assembly.
http://www.m1911.org/technic25.htmRandall Rausch
AR work: www.ar15barrels.com
Handguns: www.handgunbarrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Most work done while you wait on a scheduled shop visit.Comment
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Here are pics of the sear spring, safety up before trigger pull, and safety falls down after pulling triggerLacking photo evidence showing otherwise, I am going with this theory.
If the thumb safety won't go all the way up into the slide cut, then it is likely stopping against the sear.
The good news id that it's just a little bit more fitting to get the safety to move all the way up and properly block the sear.
IF the safety is going all the way up and the gun will fire, then the safety was over-fitted and will either need to be welded up or replaced.Last edited by gsc3zny; 11-22-2015, 11:24 PM.Comment
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Well, the sear, disconnector and trigger are in the right places in the first picture.
The 3rd picture shows that the thumb safety has enough travel.
Does the thumb safety disengage while pulling the trigger?Randall Rausch
AR work: www.ar15barrels.com
Handguns: www.handgunbarrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Most work done while you wait on a scheduled shop visit.Comment
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Thumb safety seems to be faulty.
It should NOT disengage with pressure on the trigger.
The part of the thumb safety that blocks the sear should be relatively square to the sear so that pressure applied to the trigger presses the sear against the thumb safety.


In order for the thumb safety to disengage with trigger pressure, there would have to be some angle to the thumb safety can cam the thumb safety downwards.
If it's a new gun, let RIA fix it.
No sense in spending money fixing their problem.Last edited by ar15barrels; 02-22-2015, 11:10 PM.Randall Rausch
AR work: www.ar15barrels.com
Handguns: www.handgunbarrels.com
Bolt actions: www.700barrels.com
Foreign Semi Autos: www.akbarrels.com
Most work done while you wait on a scheduled shop visit.Comment
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Buddy brought a new RIA tactical to me that he cleaned up new in the box. The preservative that they ship in is tacky, go figure it is a preservative and has wax in it. He wanted to clean it up, so he detail stripped it beyond a field strip.
It was failing with near the same symptoms you're stating, turns out the sear was assembled incorrectly. I didn't even notice while I was disassembling so I couldn't tell you the exact problem, I just tore it down and reassembled and the problem "went away".
RIA's come with a lifetime warranty, if a disassemble and reassembly doesn't work, call the good folks in Pahrump to have it fixed. (call RIA customer service)Comment
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Thats my next step. re assembled several times and still have problemBuddy brought a new RIA tactical to me that he cleaned up new in the box. The preservative that they ship in is tacky, go figure it is a preservative and has wax in it. He wanted to clean it up, so he detail stripped it beyond a field strip.
It was failing with near the same symptoms you're stating, turns out the sear was assembled incorrectly. I didn't even notice while I was disassembling so I couldn't tell you the exact problem, I just tore it down and reassembled and the problem "went away".
RIA's come with a lifetime warranty, if a disassemble and reassembly doesn't work, call the good folks in Pahrump to have it fixed. (call RIA customer service)Comment
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