Bender Posted June 27, 2016 Report Share Posted June 27, 2016 So I started noticing some issues today. When I fire a round the trigger does not reset. I have to pull the trigger halfway, it then resets, and I can then pull the trigger back to fire a round. I also noticed that the bolt hold open lever is not holding the bolt open. With no mag in, I push up on the lever with the bolt back, but it seems like it can't catch or can't handle holding the bolt back. The gun:West Hurley 1927a1SbrEZ pull spring kit Any ideas? Link to comment Share on other sites More sharing options...
Bender Posted June 27, 2016 Author Report Share Posted June 27, 2016 I'll add that im seeing a worn area on the bottom of the bolt where the pawl catches the bolt to hold tot open. And the pawl is worn where is catches the bolt. Then the disconnector has some wear marks all of the top surface(which must contact the bolt). I would assume these parts need to be replaced, but now I'm wondering about my bolt.... Any thoughts on this being caused by the ezpull spring kit? I have about 100 rounds through it with the spring kit installed. Link to comment Share on other sites More sharing options...
Bender Posted June 28, 2016 Author Report Share Posted June 28, 2016 And the bolt won't stay open after last round Link to comment Share on other sites More sharing options...
Bender Posted July 2, 2016 Author Report Share Posted July 2, 2016 I have some photos of what is happening to the parts.http://i66.tinypic.com/b5l2me.jpghttp://i63.tinypic.com/fz3io8.jpghttp://i63.tinypic.com/9v9kht.jpghttp://i65.tinypic.com/kd0qx0.jpghttp://i68.tinypic.com/jzy2w7.jpg ANYONE have any thoughts?I'm assuming the ezpull Spring kit caused this, but I'm hesitant to replace these parts, without knowing exactly why this happened. Maybe a video will entice some help! This was the last outing, after this I noticed the damage.https://m.youtube.com/watch?v=Sh6Fxr7dBjY Link to comment Share on other sites More sharing options...
06AngusSG Posted July 3, 2016 Report Share Posted July 3, 2016 That wear looks really odd. I wish I had something to help out but I don't. I've had no issues with my ez-pulls. Sorry. Link to comment Share on other sites More sharing options...
Bender Posted July 3, 2016 Author Report Share Posted July 3, 2016 That helps angus, I was beginning to think I was alone on the semi auto forum! I haven't found anything on anyone having these issues before(that posted about it online anyways). Link to comment Share on other sites More sharing options...
deerslayer Posted July 3, 2016 Report Share Posted July 3, 2016 New trigger group parts should be installed. Or at least remove the burs for temporary possible relief. Trip and pawl are soft as they weren't properly hardened. Trigger looks that way too. Link to comment Share on other sites More sharing options...
Bender Posted July 3, 2016 Author Report Share Posted July 3, 2016 That's what I was thinking. I bought the gun pretty much unfired, so I'm the one kind of working the kinks out of an old gun. Are the new parts from AO case hardened better? The bolt is showing signs of wear also.....opinion on that? I did smooth out the burs....same problem. The edges being peened over are not catching like they should. Link to comment Share on other sites More sharing options...
deerslayer Posted July 3, 2016 Report Share Posted July 3, 2016 New bolt. Everything new from kahr. Link to comment Share on other sites More sharing options...
Bender Posted July 3, 2016 Author Report Share Posted July 3, 2016 Damn! But hopefully better made parts solves the issue. Also, any issues with a new bolt being thrown in? Is it just drop in, or does it need to be headspaced? Link to comment Share on other sites More sharing options...
06AngusSG Posted July 3, 2016 Report Share Posted July 3, 2016 Bolt should be drop in. I did some minor polishing and deburring on mine. Headspace shouldn't be a worry on these. They're really forgiving. As for the parts being better made or properly hardened.... It's kind of a crap shoot. Refer to older posts on Kahrs manufacturing and customer service problems... Someone else with a better standard should own the Thompson rights. Good luck. Happy 4th. Jon Link to comment Share on other sites More sharing options...
06AngusSG Posted July 3, 2016 Report Share Posted July 3, 2016 Bolt should be drop in. I did some minor polishing and deburring on mine. Headspace shouldn't be a worry on these. They're really forgiving. As for the parts being better made or properly hardened.... It's kind of a crap shoot. Refer to older posts on Kahrs manufacturing and customer service problems... Someone else with a better standard should own the Thompson rights. Good luck. Happy 4th. Jon Link to comment Share on other sites More sharing options...
58healeybn6 Posted July 3, 2016 Report Share Posted July 3, 2016 I recently replaced the sear block on my AO 1927 with no problem. I was having a couple of double taps with mine and the rear of the sear block looked very similar to yours. I am wondering if your firing pin is catching on the rear of the sear block where it rides over the safety. That would account for your having to pull the trigger halfway to reset the trigger. It would drop a bit when you pulled the trigger halfway and slide forward to engage the correct sear. When you replace your sear block, you will have to check the protrusion of your firing pin where it contacts the sear block. Mine was .100" below the breech block bottom surface, but yours may be different. If it is too long, it will hit the rear of the sear block and hang up. Fit the firing pin protrusion with the hammer in place to ensure that the firing pin does not get pushed up when you are measuring it. A vernier works well to give you the correct measurement. As a bit of added info, I ordered the video on Thompson submachine guns from American Gunsmithing Institute for about $45.00 which also shows the AO disassembly and reassembly. Good luck. Link to comment Share on other sites More sharing options...
Paladin601 Posted July 3, 2016 Report Share Posted July 3, 2016 New bolt. Everything new from kahr.This^^^^^^^^^^^^^^^^^^^ Could also send the Gun to Dan and he will fix it right Link to comment Share on other sites More sharing options...
Bender Posted July 3, 2016 Author Report Share Posted July 3, 2016 I've already fully disassembled, cleaned up(deburred), reassembled the fire control group, which didn't help. I'd say these parts are shot. I just hate knowing I'm taking a chance on kahrs quality with new parts. This gun has no more than 500 rounds through it total. I think it was built around 1990, I have the date somewhere. Link to comment Share on other sites More sharing options...
Guest 4WHLDRFTN Posted July 5, 2016 Report Share Posted July 5, 2016 has this gun ever been greased Link to comment Share on other sites More sharing options...
Bender Posted July 5, 2016 Author Report Share Posted July 5, 2016 ^absolutely. I probably overdue it with grease. But for these pictures I cleaned the hell out of it first, so I could get the best pictures I could of the wear. Link to comment Share on other sites More sharing options...
Guest 4WHLDRFTN Posted July 5, 2016 Report Share Posted July 5, 2016 I probably overdue it with grease. my '91 after 10k+ rds has all O.E. parts n no wear ...... and lot's of grease http://i1102.photobucket.com/albums/g448/4WHLDRFTN/IMG_3469_zpst2scynoh.jpg Link to comment Share on other sites More sharing options...
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