Trouble removing bushmaster FS taper pins

[alpha_romeo_XV]

[mecam]

You will need to grind those pins off with a cutoff wheel. Then hammer the pins out. It took me over 20 hard hits to get each pins out and get a steel punch.

[ar15barrels]

You just need the support block and the right punch/hammer.



If that fails, I use the pin pusher I made...





A Dremel is NEVER required when you have the right tools.

[mecam]

Nice, I like that pin pusher idea.

[ar15barrels]

Nice, I like that pin pusher idea.

That was about generation 3.
I am on generation 5 now.
As I break them, I figure ways to make them even stronger.
Generation 5 should last me a few years as it has replacable tips.

This is overkill for most people, but then I remove and install a LOT more taper pins that most people.

[alpha_romeo_XV]

Thanks guys, now I know my stuck taper pins were more the rule than the exception.
That Brownel's fixture block looks pretty sexy but I can't justify $40 for a one time job. I'll rig up a gen1 push device from what I got laying around.

[ar15barrels]

I'll rig up a gen1 push device from what I got laying around.

The gen1 push device is a stack of 3-4 #10 flat washers around the large end of the taper pin.
Then clamp it in the vise with the vise bearing on the small end of the pin like this:

[tophatjones]

I've also had some trouble with Bushmaster taper pins. They must get em in there real good. For me, I applied some heat with a torch and gave the pins a really good hit. The first couple hits are the most important. Once you get them starting, they'll come out with hardly any effort at all.

[mltrading]

The Brownells fixture is very useful!!! Also remember not to use brass punch. The brass punch will just twist.

I use the Brownells fixture and a Starrett stainless punch. So far I've knocked out more than 50X2 FSB tapper pins without failure.

[Josh3239]

I never have had a problem knocking out FS taper pins, even with Bushmaster uppers. All I use are some punches and a hammer.

[alpha_romeo_XV]

[ar15barrels]

I finally got the taper pins out of the front sight block. The problem was that Bushmaster had peened over the small end of the pins creating a rivet head.

I'll hazard a guess that you wacked that pin a bunch of times in your early attempts to remove it.
YOU peened the end of the pin like a rivet, not bushmaster.
I always warn people that if you don't get the pins loose in 2-3 wacks with a hammer/punch, stop and re-evaluate your setup because you are only going to make it worse for yourself when you peen the end of the pin like a rivet.

Why do you think I go to so much trouble making removal fixtures and such?

[mltrading]

I'll hazard a guess that you wacked that pin a bunch of times in your early attempts to remove it.
YOU peened the end of the pin like a rivet, not bushmaster.
I always warn people that if you don't get the pins loose in 2-3 wacks with a hammer/punch, stop and re-evaluate your setup because you are only going to make it worse for yourself when you peen the end of the pin like a rivet.

Why do you think I go to so much trouble making removal fixtures and such?

+1

Usually I am able to (start to) move the tapper pins at very first whack. In rare cases, it needs the second or third whack to start.

AFAIK, none of the manufacturers peen the tapper pin like rivet. The only thing I know is, Vltor suggests users to "stake" the tapper pins. It's "stake" instead of mushroom-like rivets.

[tophatjones]

FWIW, my Bushy had taper pins for sure. However, to even to get them to start moving, I needed to use a propane torch and a series of very solid hits. After that it was no problem.

[bohoki]

anybody know where i could get the standard front sling swivel cheap