AR15 Lower assembled.. 2 pins left over?

[Brianma65]

Hey,
I just assembled my Colt Lower and have 2 pins left over.

Is this kinda like the barbecues, that always come with extra parts

Everything seems to working correctly.
Well the bolt release don’t seem to have a lot of tension, but maybe that’s because there’s no bolt yet?

She took a few dings from the brass hammer, probably lowered the value by 15% lol.

Here’s a pic of the 2 pins.

 

[tharkhold]

could the tapered pin be the installation helper pin for the trigger group?

As for the roll pin... uh, you had a spare in there, pretty much like ending up with extra Ikea hardware?

 

[Kratos]

Part 86 is a detent.
Part 90 is a roll pin.
Part 98 is a detent.
Part 101 is a detent.
Part 102 is a roll pin.
Part 111 is a detent.

Did you miss putting any of these parts in?

 

[Brianma65]

Part 86 is a detent.
Part 90 is a roll pin.
Part 98 is a detent.
Part 101 is a detent.
Part 102 is a roll pin.
Part 111 is a detent.

Did you miss putting any of these parts in?

no, I got all those.
The only thing I’m not sure that is working correctly, is the bolt catch.
It only has a spring like tension,when the hammer is in the firing position.

 

[Fisselig]

no, I got all those.

The only thing I’m not sure that is working correctly, is the bolt catch.
It only has a spring like tension,when the hammer is in the firing position.

Do you have an upper that is fully assembled and functional? You can really only test function of the bolt catch that way - seeing if the bolt is locked back and caught by the bolt catch, and then if pressing it allows it to go into battery again.

 

[Kratos]

The bolt catch isn’t very stiff in my experience, either the mag or bolt pushes on it and that’s where it gets tension from.

Do you have an upper that is fully assembled and functional? You can really only test function of the bolt catch that way - seeing if the bolt is locked back and caught by the bolt catch, and then if pressing it allows it to go into battery again.

Agreed, the only way to know if it’s funtioning is testing with an upper.

 

[Brianma65]

I have the upper,but won’t have the BCG until later in the week.
I think it’s good though,once the hammer is back, in the firing position, it has the spring back tension .

 

[Kratos]

I have the upper,but won’t have the BCG until later in the week.
I think it’s good though,once the hammer is back, in the firing position, it has the spring back tension .

Oh I think I see now. When the hammer isn’t cocked the bolt catch is gritty almost, only moves if you manually move it? That’s normal, it’s only because the hammer is resting on it.

 

[Brianma65]

Oh I think I see now. When the hammer isn’t cocked the bolt catch is gritty almost, only moves if you manually move it? That’s normal, it’s only because the hammer is resting on it.

Yes, that’s exactly what I was trying to say.
Thanks!

 

[jiffx2781]

I don't think you have anything left over that shouldn't be.

The top pin in the pic is a second pin for the trigger guard. It looks like yours doesn't require it because it has one spring loaded pin. Some trigger guards don't have that so they would then require both roll pins.

The bottom pin in your pic with the tapered ends is a slave pin that is used to hold the disconnector in place while installing the trigger group. It simply pushes out when you push the actual trigger pin through. It serves no purpose other than making life a little easier.

The only thing I think you got wrong is incorrect use of a hammer. Oh well, if you're actually planning on using the rifle it will surely end up with a few more beauty marks to help disguise the beating it took from the hammer.......

 

[Brianma65]

Yes ,the trigger guard is spring loaded.
And the hammer was so tiny, I should’ve used my Stileto

It may be removable as it’s brass flakes from the hammer... maybe