Trigger got Heavier

[RevolversCostalot]

In the first few months of owning my Diamondback DB9 G4, the trigger pull was light, and I was impressed with it's accuracy. Unfortunately, that changed after one of my cleaning sessions. I was cleaning around the exposed rear part of the firing pin assembly when I heard a click. I cleaned and lubricated everything just as I had before, and reassembled. It has never been the same since. The trigger pull weight now feels heavier than either of my double-action revolvers and the two dowels closest to the trigger try to work their way out of the gun until I tap them back into place every 12 rounds or so.

I happen to have a new firing pin assembly that I ordered from the Diamondback site when I ordered some magazines. Should I attempt to disassemble the slide? I take machines apart for a living, but this would be my first real firearm repair. I really don't want to send it to Florida and wait around for months.

[RevolversCostalot]

Whoops, I just realized that this belongs in Ask the Armorer. I'll post it there and delete this as soon as I have permission to edit my posts.

[Timbonez]

I recommend that you reach out to Diamondback customer service and present the issue you're having to them. It may not require having to send the firearm in for service. Are you sure everything was reassembled correctly? Did you follow the user's manual?

[Clusterfrack]

Whoops, I just realized that this belongs in Ask the Armorer. I'll post it there and delete this as soon as I have permission to edit my posts.

No worries. I fixed it. Happens all the time. Just 'report' the post and our staff of highly professional and shitty moderators will take care of it.

[RevolversCostalot]

I suppose it wouldn't hurt to submit a service request.

Field-stripping, cleaning, and lubricating this pistol is very straightforward, and it was done in accordance with the manual many times before and after I noticed the change in trigger weight. The only thing that was strange about that one cleaning session was hearing a click when cleaning around the back of the firing pin assembly.

[unclenunzie]

I've no experience with this handgun, but generally an unexpected sound followed immediately by a significant change in behavior could be a broken part. Echoing the recommendation to contact manufacturer.

[RevolversCostalot]

Submitting a service request to Diamondback has definitely been added to my to-do list. I guess I might also check if the store where I bought it could procure a new slide.

I understand that the DB9 G4 is a recent redesign of a gun that seemed to be unpopular with a lot of gun enthusiasts, so it would follow that not as many people on here have experience with it. But from what I understand, the striker-fired double-action-only pistol is pretty similar to a Glock. I'm really curious to hear any semi-educated guess as to what may have gone wrong.

[idahojess]

I'm not an armorer, nor do I own one of these guns, but looking at schematics online, it appears to have a striker block/safety, which is pretty standard.

Have you tested the striker block for proper function? Here is an article and a video:

https://www.shootingillustrated.com/...unction-check/




I second/third the advice to contact the manufacturer.

[lwt16]

Pics of the lower once field stripped might help. Specifically pics of the trigger bar assembly and inside the receiver.

I suspect broken spring and/or part.

I’ve heard of these but never seen one come through a class I taught nor at any range I’ve been on.

[RevolversCostalot]

Good video, idahojess. I definitely have a better understanding of what goes on in my slide, and the slide on that Glock looked just like my Diamondback. I tested the striker block, and it appears to be functioning correctly. I'm starting to think that the noise I heard was just a normal striker noise. I also think that after the cleaning session that preceded the change in trigger feel, I reassembled the gun with the striker in the blocked position for the first time.

Could this have damaged the sear, trigger bar, or some other component?

Here are the pictures of the lower.



I noticed that during the trigger pull, the sear moves, then twitches back a little at the halfway point, then contines to move until the trigger is all the way back. Is that normal?