Stripped Lower Problem (SWAT Firearms)

GUNSnROTORS · Nov 17, 2013

SmokingGun said:
I bought one and it runs fine - no problem whatsoever with the bolt catch. Sorry you're having issues with yours!

Same here, no problems with bolt catch on my SWAT lower. Good luck with yours.

markc · Nov 17, 2013

HT4 said:
Assuming that you are a MD resident who can't replace that, the HT4 crystal ball sees a 9mm bolt catch, a file and some Alumablack in your near future.

I'm hoping the bolt catch is out of spec. But we'll shall see.

krb · Nov 25, 2013

Dimensions but its and internet source so...

http://www.biggerhammer.net/ar15/cad/ar15_receiver.pdf

FWIW, I contacted Cimarron Mfg. about the Magpul Gen3 thing. They said they had not heard about the Gen 3 problem, but they did offer to take the lower back and attempt to make it work with Magpuls. Draw your own conclusions.

jrumann59 · Nov 25, 2013

depending on the punch you could always try and bend an off set in the punch, that pin is one of the easiest to get in and out so the offset may not cause a problem.

Overboost44 · May 24, 2014

Reviving an old one here. As above, my lower doesn't have a hole in the rear for the pin to be punched out. Needle nose won't do it either. Any more ideas? I am trying to install the bolt catch.

Overboost44 · May 24, 2014

Never mind. Mine is an allen screw. Doh!

ObsceneJesster · May 24, 2014

Overboost44 said:
Never mind. Mine is an allen screw. Doh!

LOL....At least you didn't try punching it

bigdummy30 · May 24, 2014

I've got a SWAT lower in my basement I'm off to assemble and check the bolt catch( fingers crossed)

Edit - just put it together and it appears GTG

jrumann59 · May 25, 2014

For other members and maybe chad or someone could chime in, how hard would is it to tap the holes together and just use an allen screw instead of pin?

Overboost44 · May 25, 2014

jrumann59 said:
For other members and maybe chad or someone could chime in, how hard would is it to tap the holes together and just use an allen screw instead of pin?

Thing is, this has threads only part way down (the length of the first hole) the rest is a smooth pin for the movement of the bolt catch. Then since the other end is closed, the pin has a stop. If you threaded through both ends, the middle would likely need to be smooth. I know I am probably not telling you anything you don't know, but if you haven't seen one before...

As far as how hard it is to do, I can't help you there.

jrumann59 · May 25, 2014

Overboost44 said:
Thing is, this has threads only part way down (the length of the first hole) the rest is a smooth pin for the movement of the bolt catch. Then since the other end is closed, the pin has a stop. If you threaded through both ends, the middle would likely need to be smooth. I know I am probably not telling you anything you don't know, but if you haven't seen one before...

As far as how hard it is to do, I can't help you there.

Or the BHO lever hole could be opened a hair. Just spit ballin. Maybe even check with a lower manufacturer that uses an allen screw in place of the pin like Seekins.

clandestine · May 25, 2014

jrumann59 said:
For other members and maybe chad or someone could chime in, how hard would is it to tap the holes together and just use an allen screw instead of pin?

I have not tried to do that so it would be speculation on my part. Im guessing it could be done but locking the screw in may be a challenge.

Kingjamez · May 25, 2014

jrumann59 said:
For other members and maybe chad or someone could chime in, how hard would is it to tap the holes together and just use an allen screw instead of pin?

AR-308 lowers are done that way. I don't really see the point though. With an $8.00 tool, installing and removing the roll pin is very easy.

-Jim

drewhall · May 25, 2014

On my billet 80% I was able to just use a small Allen key and tap it out. Not sure how tight yours is.

GUNSnROTORS · May 25, 2014

Already mentioned twice above ('cept the price is now $16). Here's a link and photo. I use this for all lowers ... except allen screw variants.

http://www.brownells.com/gunsmith-t...bly-tools/bolt-catch-pin-punch-prod26484.aspx

armed ferret · May 25, 2014

16? 12.49 for me.

Kingjamez · May 25, 2014

I like this one: http://www.amazon.com/Wheeler-AR-15-Pivot-Roll-Install/dp/B00AUEHSLU

Only $6.00 and free Prime shipping.

-Jim

armed ferret · May 25, 2014

Kingjamez said:
I like this one: http://www.amazon.com/Wheeler-AR-15-Pivot-Roll-Install/dp/B00AUEHSLU

Only $6.00 and free Prime shipping.

-Jim

that thing has nothing to do with the bolt catch roll pin.

"free prime shipping" actually costs 100 bucks a year. so it's not really all that "free" now is it?

my69rox · May 25, 2014

mill that area down a little

armed ferret · May 25, 2014

my69rox said:
mill that area down a little

not everyone owns a mill.

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