ar15 trigger problem

[raybwf]

Hello all,

I've been reading these forums for a while but am actually posting now regarding an issue I am having. While I have been shooting for awhile I recently took it upon myself to do my first AR build.

I have a JD lower with a DPMS upper and a Timberwolf SS LPK. I installed this on my lower receiver and have a problem with the trigger assembly. During function check with and without the upper attached, the travel of the the hammer actually clicks back twice and locks further back that I cannot reset the trigger or get into fire position. I cannot do a trigger reset after this point and it is just plain locked. From my understanding, on all semi-auto only LPK's, the hammer should only move back once and lock against the disconnector once. The hammer actually travels further back and can click back/lock twice. This is a problem as when I do a function test (I have not even fired this once). I pull my charging handle back and it pulls the hammer back so far that it clicks twice. The trigger is then stuck at this point and the only way I can get it to release is to open up the action and use a tool to push the disconnector down and release the hammer. The hammer at this point will be free to fire and in the position that it should be to fire.

I brought this back to the retailer to verify installation and integrity. They ahve now they asked me to contact Timberwolf Tactical regarding the problem. I haven't heard a response yet so I figure I might as well check in here with the resident experts.

Thanks in advance for the help!

[IsaacGlass]

Is this a single or two stage trigger? better yet do you have any pictures of the trigger assembly we can used as reference.

[raybwf]

Hi,

It is a single stage trigger and I do not have a camera handy but will post pics as soon as I can. For the record this is the LPK that I have

http://www.timberwolfwarrior.com/images/products/PROKIT1.jpg

Thanks!

[CHS]

Call Timberwolf.

Better yet, return the LPK and pick up a standard Milspec one. There is absolutely no need or reason or advantage to running a SS LPK.

[FMJBT]

Sounds like the disconnector is binding on something, preventing it from resetting the hammer. I'd pull it back apart and check the trigger/disconnector assembly for freedom of movement. The little spring under the disconnector might be in backwards, it has a slight taper to it that might cause binding if it's flipped.

[ar15barrels]

Sounds like the disconnector is binding on something, preventing it from resetting the hammer. I'd pull it back apart and check the trigger/disconnector assembly for freedom of movement. The little spring under the disconnector might be in backwards, it has a slight taper to it that might cause binding if it's flipped.

The upside down disconnector spring is the most common issue with the disconnector.
People think it goes the easy way, not the hard way.

[77bawls]

Nope the spring is not the problem with this LPK.
I had the same problem. The hammer is getting stuck on the disconnector. You need to take off some material from the hammer. It is only a couple thousands. I fixed it by hitting it with a little emery cloth by hand. I started by using a piece of glass but it really isn't required for what it does. Just take off a little at a time and recheck. You might also have a problem with the hammer pin retaining spring not catching the pin.

There is absolutely no need or reason or advantage to running a SS LPK.

Sure there is. Silver colored trigger and pins.

[77bawls]

See my thread here.

http://pirate4x4.com/forum/showthread.php?t=870744

Remove a little material from the circled edge.
Trigger Group.jpg

[77bawls]

Did that help?

[xounlistedxox]

If you were going to go that route it would be better to remove a little material from the disconnector instead of the trigger. This is a very common problem with the Timberwolf SS LPK. Two shops locally that I know of have used these kits and had this exact problem. They called the Timberwolf people and they said "oh just remove some material from the disconnector" I personally would rather return that kit and purchase a kit that needed no modification out of the box.

[raybwf]

Hi Guys,

Just checking back in and trying to get my wifey to send me the pics I took with her iphone. I'll put em up for reference. Thanks so much for all the input. Just my luck to get a lpk that is faulty out of all the options that are out there. I'll give the recommendations a shot this morning and will let you know how it goes. Thanks again fellas!

[ar15barrels]

See my thread here.

http://pirate4x4.com/forum/showthread.php?t=870744

Remove a little material from the circled edge.
[ATTACH]49689[/ATTACH]

That is NOT the proper method to re-time a disconnector.
You should remove from the leading edge of the disconnector, not from the trailing edge of the hammer.

[raybwf]

Damn - the fix did it! I filed down the hammer a tad bit (sorry ar15barrels, just saw your post now) and it has fixed the trigger issue. Assembled everything and it's cycling and traveling smooth. Hopefully out to the range this weekend for it's first run through. Thanks so much for the comments and suggestions, you guys are awesome!

[DDRH]

If you were going to go that route it would be better to remove a little material from the disconnector instead of the trigger. This is a very common problem with the Timberwolf SS LPK. Two shops locally that I know of have used these kits and had this exact problem. They called the Timberwolf people and they said "oh just remove some material from the disconnector" I personally would rather return that kit and purchase a kit that needed no modification out of the box.

You mean remove from disconnected and not hammer (trigger )

[77bawls]

That is NOT the proper method to re-time a disconnector.
You should remove from the leading edge of the disconnector, not from the trailing edge of the hammer.

I don't know. Looking at the disconnector there is way less material there. The disconnector is the part that holds the hammer I wouldn't want to be messing with that.