AR Sponsor
Posted: 3/26/2013 1:37:42 PM EDT
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I just installed a RR single stage LPK and took it out for a test fire. I have a Larue Upper. It fires one round, chambers another but won't fire it. I have to cycle the charging handle to rest everything. Any ideas?
Thanks |
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Parts lubed before you install them?
With the FCG back out, dry fit the trigger pin to the trigger to check for C side channel burs that will not allow the pin to free rotate in the trigger channel. Then run your finger nail down the back hammer sear, and the disco sear to check for edge burs as well. If burs are found, remove them. Also take a look at the pistol grip bolt to make sure that the top threads of it are not protruding into the bottom of the lower receiver void. Disconnector spring gets installed large coil side down into the back trigger slot (have to press it in), under the disco tail. Lastly, when you have the FCG reinstalled well lubed (including the pins that their channels), confirm that the tail of the hammer is not binding up on the U slot of the selector, and the sides of the hammer C sections are not binding up on the sides of the lower receiver void (trigger side legs too wide for the lower receiver. |
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Well,
Also when you install the disconnector spring...make sure it seats all the way...you sometimes have to rotate the spring to get it to seat in the trigger... Turn it in the direction of compressing the spring... I've seen more than one not seated. And gets crooked and causes the spring to bind on the disconnector... Bret |
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