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Dark Mod
06-02-2011, 10:29 AM
Assembled my first lower a couple weeks ago and i did it using Youtube videos. Thing is the pin that holds the bolt catch keeps falling out (and its a pain in the neck to find). The pin doesnt seem long enough, it doesnt go all the way from one hole to the other. Is this a common problem or did i use the wrong pin?

69Mach1
06-02-2011, 10:29 AM
picture

69Mach1
06-02-2011, 10:30 AM
http://www.ar15.com/content/guides/assembly/lower/

dieselpower
06-02-2011, 1:17 PM
you are in Tustin...go to riflegear and show them. They may help and they WILL have what you need to fix your issue.

FYI if you used the wrong pin, there maybe a wrong pin somewhere else in your firearm...

Dark Mod
06-02-2011, 3:36 PM
you are in Tustin...go to riflegear and show them. They may help and they WILL have what you need to fix your issue.

FYI if you used the wrong pin, there maybe a wrong pin somewhere else in your firearm...

God i hope not, it seems to be working fine though. I was gonna put some locktite on it and see if that fixes the problem

gemini1
06-02-2011, 6:25 PM
If you say that the pin is short, then as Diesel said, you may have inserted correct sized pin somewhere else. Dont do any bandaid fix to solve your problem, take out all the pins you've inserted and compare all of it, how many pins are there anyway?

Dark Mod
06-02-2011, 6:57 PM
If you say that the pin is short, then as Diesel said, you may have inserted correct sized pin somewhere else. Dont do any bandaid fix to solve your problem, take out all the pins you've inserted and compare all of it, how many pins are there anyway?


Theres like 5 or 6, Such a pain in the neck to dissasemble

AmbientR
06-02-2011, 7:00 PM
is it possible you used a detent as a pin?? :kest:

Dark Mod
06-02-2011, 7:22 PM
is it possible you used a detent as a pin?? :kest:

Highly possible, take a look at the pictures, can someone tell me if this is a detent?

http://i45.photobucket.com/albums/f64/markdoddridge/pin2.jpg

http://i45.photobucket.com/albums/f64/markdoddridge/pin.jpg

cmace22
06-02-2011, 7:25 PM
http://i45.photobucket.com/albums/f64/markdoddridge/pin2.jpg


Yep detent!

IIRC the pin for the bolt catch is a spring/roll pin. It has a slot from one end to the other allowing the pin to conform to the hole diameter when pressed in.

Bottom pin
http://www.mcmaster.com/catalog/117/gfx/large/springpinswl.gif

818gtiguy
06-02-2011, 7:25 PM
Looks like a detent to me.

cmace22
06-02-2011, 7:30 PM
There are 4 detent pins, you need to check for the bolt catch spring/roll pin laying around somewhere....

Take down pins (2)
Selector (1)
Bolt catch (1 well its called a buffer)

This may help

http://www.ar15.com/content/guides/assembly/lower/lowerKit.gif

gemini1
06-02-2011, 7:33 PM
Theres like 5 or 6, Such a pain in the neck to dissasemble

Better a pain in the neck than feeling sorry later on for messing up the rifle.
If I remember right, I think theres only 2 roll pins, one for the trigger guard and one for the bolt catch, the others are detent pins. You might try to remove the trigger roll pin, might get lucky if thats the one for the bolt catch.

edit: forgot about the pins holding the take down pins.

Dark Mod
06-02-2011, 8:28 PM
Crap thanks guys, The funny thing is the first time it fell out i found a "pin" that was lying around extra, i thought id mcguyver it in there (not knowing thats what actually was supposed to go in there) and snapped that bastard in half. I guess i know what i need to buy now. I wonder where this detent pin was supposed to go?

Vinz
06-02-2011, 9:43 PM
go take it shooting and see what falls off first. LOL j/k

pop your front pin out and see if the detent is there. if it is its for the rear pin.
EFF you tube.

Rukus
06-02-2011, 10:10 PM
I've heard that some LPK's include an extra detent in the kit just in case you lose one.

It should be a pretty easy task to determine if it was extra, they are only used in a couple of places.