Anyone have an idea what this part belongs to?

[LocoGringo]

I took 2 bolt action rifles and an AR-15 that I changed the trigger to recently. After a couple rounds of shooting the guns I look down on the bench and see this part laying there. I didn’t see it before I started shooting, but it’s small so it’s possible I overlooked it. Nothing malfunctioned, so I’m at a loss.

 

[NDArmyGuyret]

Is there a hex or screwdriver slot on the one end? I'm thinking by the size of the part it may be for your AR. Just a guess...

 

[LocoGringo]

Is there a hex or screwdriver slot on the one end? I'm thinking by the size of the part it may be for your AR. Just a guess...

small allen key

I thought AR-15 also, but I don't see anything missing anywhere. Doesn't mean there isn't though...

 

[NIGHTLORD40K]

Looks like a set screw to me. Does your lower have provision for tensioning the upper to eliminate movement between the halves? Some higher end lowers do.

Im also thinking it could be a trigger overtravel adjustment screw or maybe a stock screw. Is it a Luth-Ar or Hera Arms stock? May have fallen out of a billet handguard too.

 

[LocoGringo]

Looks like a set screw to me. Does your lower have provision for tensioning the upper to eliminate movement between the halves? Some higher end lowers do.

Im also thinking it could be a trigger overtravel adjustment screw or maybe a stock screw. Is it a Luth-Ar or Hera Arms stock? May have fallen out of a billet handguard too.

Mega forged lower (I also have a Mega billet lower, so I know the difference) that has the green pad at the rear for tensioning and it is in place. I've separated the upper and lower and released the hammer and see nothing missing in the Rise Armament 1776 trigger assembly. The buffer retainer pin is in place. The buttstock is just a Magpul CTR stock. All hardware for the handguard is in place, all hardware for the SLR adjustable gas block is in place and all hardware for the Aero scope mount is in place. All hardware for the Faxon lightweight BCG is in place.

Scratching my head...

 

[NIGHTLORD40K]

Scope mount? Maybe from one of the bolt guns?

 

[NIGHTLORD40K]

Or a trigger adjustment screw from one of the bolt guns?

 

[NMexJim]

Or a trigger adjustment screw from one of the bolt guns?

That was my thought. What bolt guns ?

 

[LocoGringo]

Or a trigger adjustment screw from one of the bolt guns?

Eureka! There was a set screw in my Bergara B14 trigger. I had no idea. Now I gotta figure out what the "setting" is/was and what that screw does. Thank you.

 

[LocoGringo]

Could that be why I was shooting like crap with this rifle today?

 

[NIGHTLORD40K]

Sure could be. Its either an travel adjustment or a tension screw depending on where exactly it goes.

 

[NMexJim]

Eureka! There was a set screw in my Bergara B14 trigger. I had no idea. Now I gotta figure out what the "setting" is/was and what that screw does. Thank you.

Locktite Blue threadlicker

 

[LocoGringo]

Locktite Blue threadlicker

Yeah, but what does that part actually do? I can't seem to find a use for it. It didn't seem to make a difference when it was in place versus when it had fallen out and after my "google-fu", I can't even find a diagram that shows the part, much less explains what it does.

 

[NIGHTLORD40K]

Pic?

 

[NIGHTLORD40K]

Ok, I saw a thread on Snipers Hide where a number of other Bergara owners had the same problem with the screw falling out. It is supposed to be the trigger pull weight adjustment. Some B14s have an access hole in the bottom metal so it can be adjusted without removing the stock- others don't.
The fix is a drop of Loc-Tite.

 

[LocoGringo]

Pic?

 

[LocoGringo]

Ok, you can see the screw in the photo above. That entire thing had fallen out completely and I didn't notice a difference in the trigger pull. If it adjusts the trigger, I didn't tell a difference and I'm kind of a trigger snob. I'm not saying it doesn't adjust, but if it does, I didn't notice a difference. I've got it screwed in completely and it feels the same.

I looked at the Bergara online manual and it doesn't even show the individual part. It actually points to a different part as the trigger adjustment screw unless I'm misreading the diagram. The entire trigger assembly is simply referred to as the "trigger" in the manual.

I saw a post where someone had cut into the trigger housing to show the internals and the screw wasn't even there. Sorry, I'm just a bit frustrated trying to figure this out.

 

[NIGHTLORD40K]

Ive seen several variations on this thread-

Bergara B14 HMR trigger question

I recently purchased a Bergara and am very happy with it. The factory trigger brakes at just over 2 lbs which is fine by me. I did take the gun apart to inspect it and noticed an odd screw on the trigger housing. According to the owners manual, the trigger adjustment screw is on the front of...

pistol-forum.com

With such a small range of adjustment, it may be difficult to discern a difference without a guage.

 

[NMexJim]

A look at the Bergara trigger internals. + tuning options

Since I am very happy wit the Jewell trigger in my B14R, I felt confident enough to grind away the rivet heads and open the stock Bergara trigger to have a look inside. The first picture can be used as a reference, second picture I assembled the top trigger spring the wrong way! Anyway, this...

www.snipershide.com

Some pictures for you to look over. Winchester calls their enclosed trigger “MOA”. I think they were the first to go this way although I liked the original triggers. Hard to find much detail about Bergara.

You mentioned Rise (I like the one I have in my AR). Too bad they don’t branch out, but anyway, lots of replacement triggers assemblies out there. Jewell is mentioned in these threads. I’ve always been quick to replace a trigger group with a high quality one. One of the fastest ways to shrink groups.

 

[LocoGringo]

A look at the Bergara trigger internals. + tuning options

Since I am very happy wit the Jewell trigger in my B14R, I felt confident enough to grind away the rivet heads and open the stock Bergara trigger to have a look inside. The first picture can be used as a reference, second picture I assembled the top trigger spring the wrong way! Anyway, this...

www.snipershide.com

Some pictures for you to look over. Winchester calls their enclosed trigger “MOA”. I think they were the first to go this way although I liked the original triggers. Hard to find much detail about Bergara.

You mentioned Rise (I like the one I have in my AR). Too bad they don’t branch out, but anyway, lots of replacement triggers assemblies out there. Jewell is mentioned in these threads. I’ve always been quick to replace a trigger group with a high quality one. One of the fastest ways to shrink groups.

Thank you for those photos and those are the exact photos I was referencing in my previous post. That trigger group photo does NOT show the screw that I am referencing. The screw that fell out is in front of the trigger, not behind (you can see it in post #16).

I actually like the factory trigger and made no adjustment after firing it. This screw just worked its way out during firing (kind of surprising). I'm not sure what it does exactly because I didn't notice any difference in the trigger while firing and I shot the rifle after the screw had fallen completely out. It's screwed in completely now and I still can't tell a difference in dry firing.

Anyway, I'm just glad I found out where it went and that it wasn't from the AR-15 I was shooting.

 

[Speedo66]

Purple Loctite for small screws.

 

[12Bravo20]

Looks like a set screw to me. Does your lower have provision for tensioning the upper to eliminate movement between the halves? Some higher end lowers do.

Im also thinking it could be a trigger overtravel adjustment screw or maybe a stock screw. Is it a Luth-Ar or Hera Arms stock? May have fallen out of a billet handguard too.

I would say that it is a trigger adjustment screw or stock screw. All of the AR tension screws I have seen are under the pistol grip. SO one would have to remove the pistol gip or take the upper off the lower for the tension screw to just fall out.