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Posted: 12/14/2005 3:58:00 PM EDT
[#1]
+1 |
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Posted: 12/14/2005 4:33:02 PM EDT
[#2]
+1 on that never had a problem unless I first try a pinch with the same size dia. has the pin. |
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Posted: 12/18/2005 1:06:04 AM EDT
[#3]
Tweak- I came up with a new system, but it's very similar to using a hydraulic press. I made a backup piece that sits against the FSB. It is 1/2" diameter steel, about 1/2" long. It's drilled about 0.150" down the middle and turned down to about 3/8" on one end for half the length. This wonderful little piece will fit up against the handguard cap (over the large end of the taper pin) and allow me to clamp the FSB against it in a simple bench vise. As there is a small amount of the small end of the taper pin sticking out on the other side, I am putting pressure on the pin with one vise jaw and on the FSB with my little backup piece. Crank down on the vise until you get the wonderful "POP" of the pin being dislodged. NO Bushmaster pin has been able to defeat my vise yet! Randall Rausch www.ar15barrels.com |
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Posted: 12/18/2005 4:29:30 AM EDT
[#4]
If I can't fit it in my tool box it can't go to the range
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Posted: 12/18/2005 8:08:31 AM EDT
[#5]
You mean you don't take a little drill press vise to the range  I have been considering adding a small lathe and milling machine to the bed of my truck. It's the power issue that has me stumped. <---Look over there, it finally says I am a dealer... Randall Rausch www.ar15barrels.com |
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Posted: 12/18/2005 3:35:56 PM EDT
[#6]
Randall, Email sent!! Weazer |
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Posted: 12/19/2005 5:12:34 AM EDT
[#7]
 
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Posted: 12/19/2005 11:30:44 AM EDT
[#8]
I need help. I have isolated my FSB, used kroil, applied heat, threw it in the freezer, used a tiny hammer, then a big hammer, then an even bigger hammer...
I am tired of dealing with it. Does anyone have a picture of the appropriate cross cuts to chop away the FSB? It is unusable as it is scarred for life and I dont need it for any projects down the road? better yet, does anyone have any ideas for a feild expediant press? Or maybe a small hydrolic press that I would be able to make DIY? |
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Posted: 12/19/2005 1:37:35 PM EDT
[#9]
Ok... I cut the peice of crap off.
From pictures like this one:  it appears that the pins only "catch" on half of the barrel, and the other half on the FSB. The bushmaster I just decimated went almost entirely through the barrel. The picture above illustrates an open portion of the barrel where the pins go... mine was closed... in effect two holes though the barrel. Comments tweak? |
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Posted: 12/19/2005 2:11:43 PM EDT
[#10]
looks like a common BFI drill job. 
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Posted: 12/19/2005 5:10:25 PM EDT
[#11]
I always send my Bushy barrels off to Bushmaster whenever I need the FSB removed. I figure let them deal with the pins that won't come out, someday they might learn how to install an FSB like Colt does. Also if they screw it up they have to replace it.
Tweak, will Bushmaster replace barrels that have the tapper pin holes drilled out of spec? |
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Posted: 12/19/2005 5:40:17 PM EDT
[#12]
I just tried a variation on Randall's method of using a vise as a press and it worked perfectly. No more beating out tough pins for me.
Thanks Randall. |
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Posted: 12/19/2005 6:06:54 PM EDT
[#13]
Yep, I really hate how BFI puts their pins so far up into the barrel. There is really no need for more than half the pin to be in the barrel. One day, I am going to get an air gauge so I can measure some different bores with and without pins installed. I'd be willing to bet that a BM barrel's bore changes when the pins get installed or removed. |
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Posted: 12/19/2005 6:10:41 PM EDT
[#14]
About 10 posts up, I mention how to do this on a bench vise. You just need to be creative. Heck, a 1/2" tall stack of #10 washers with duct tape wrapped around them to hold them together would even work in a pinch. |
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Posted: 12/19/2005 6:29:24 PM EDT
[#15]
maybe, they have |
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Posted: 12/27/2005 9:12:49 AM EDT
[#16]
After several people asking for clarification, I did a quick model of this in AutoCad. I left air space between the parts so you could see what's happening. The size of the vise really does not matter as long as it opens up enough to fit the barrel and pusher inside it. Please excuse the gay colors. In actual use, you simply place it over the large end of the pin, hold it to the FSB while you tighten the vise jaws against the small end of the pin and the backup piece. Vise pressure forces the pin into the open space in the backup piece. To re-install a pin, put the backup piece on the other side of the FSB and vise pressure pushes the pin through and into the open space again. Viola:   
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Posted: 12/27/2005 10:29:20 PM EDT
[#17]
MODERATORS~
Can we get this thread or atleast the pictures and directions of Randall's little gizmo tacked? This is great stuff. Randall, I think you might just have a new product you can market.. Gene |
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Posted: 12/27/2005 10:55:00 PM EDT
[#18]
Ya ain't seen nothing yet. I came up with an even simpler (easy to produce and no vise required) idea this afternoon. Give me a few weeks to get my shop up-and-running and I will have a few samples made to send to Mongo, Tweak and Dano to play with. Then, and only then, will I have a product to market... |
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Posted: 12/28/2005 12:32:55 AM EDT
[#19]
Can you say "CHA-CHING". I'll be looking. Gene of course I'll be trying the stacked up washer idea next time I have to do this. 
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Posted: 12/28/2005 2:43:50 AM EDT
[#20]
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Posted: 12/28/2005 2:55:43 AM EDT
[#21]
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Posted: 1/7/2006 11:28:26 AM EDT
[#22]
Randall, whatever this handy-dandy device is, I will get one! I put off the install of a Larue rail until I got the 'right' tools. All the suggested methods, freezing, Kroil, Brownells benchblock, taper pin starter, mini sledge, were defeated by the *&^%($ FSB pins of my M4 Colt. I have a nicely flattened Starett pin starter now. Colt must press them in hydraulically, at -80 deg F. Had the same problem removing a FSB in the 1980's when all the appropriate tools weren't easily available. Damned FSB pins 
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Posted: 1/7/2006 2:48:33 PM EDT
[#23]
not a starter punch, a VERY LARGE punch like 1/4" D, you are beating on the small end right?
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Posted: 1/7/2006 6:53:01 PM EDT
[#24]
Using the vice as a press works awesome! I use a couple of 1/4" drive sockets of various sizes as a backer and use a torx bit in a socket as a pusher. Works perfectly. Center everything up and start cranking on the handle until the pin moves moves. Even works on the really tough ones. I had one tough one that I really had to crank on, but it came loose. It does take a couple of people to do it. Great suggestion.
I am interested in your new setup Randall, the vice works good enough that I have basically thrown out the delrin Brownells block. Anything that would work without needing to sets of hands to setup would be handy. |
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Posted: 1/8/2006 8:53:36 AM EDT
[#25]
I have one of those too. 
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Posted: 1/9/2006 6:41:27 AM EDT
[#26]
Even if someone did not know the pins go out left to right, the Brownell's block makes it dummy proof. I will try the vise method this weekend. |
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Posted: 1/15/2006 11:40:34 AM EDT
[#27]
Finally got the pins out and learned that the best way is to press them out with a vise. Used the idea Randall mentioned to push out the pins. My improvised method used a 3/16" socket and a hardened punch along with the handymans best friend - duct tape.
I duct taped the socket (small end out) to the upper end of the vise jaw, and taped the punch lengthwise inside the vise jaw so that the flat is opposite the socket. Check for alignment with the FSB pin and slowly tighten it while maintaining alignment. The pin will be pushed left to right into the opening of the socket. My pins did not pop as much as were pushed out enough for the (now repaired) starter punch to tap them out. I had soaked the pins in Kroil and it had penetrated the joint. After installing the Larue rail, I pressed the pins back in to their original depth. I suspect that the smoother the pin seats are drilled/machined, the harder the pins will be to drive out. The Colt pins and their seats were well machined. The pins must be pressed in hydraulically since you don't see them boogered up from the factory. From now on, I will use the vise method. |
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Posted: 1/24/2006 2:26:05 PM EDT
[#28]
Bump for update on Randall's new taper pin tool.
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Posted: 1/24/2006 4:29:38 PM EDT
[#29]
tag for updates also
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Posted: 1/24/2006 10:52:30 PM EDT
[#30]
Randall, what can I say? Hat's off to you, guy!
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Posted: 1/26/2006 9:40:35 PM EDT
[#31]
Tried the vise method. It made a deep (and I mean deep) ring-shaped indent in the FSB, and the taper pin did not budge at all.
I've been working on this FSB (a Bushmaster, of course) with no luck for hours, and as you can see from my other thread, I'm very concerned about harming the barrel. I may cut the FSB off and use the YHM. |
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