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Posted: 7/23/2006 3:12:15 PM EDT
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I just ordered a Larue 7" free float tube. I have to remove the Front Sight Base to install the tube but I can't seem to get it off. I have a set of punches and I thought you just took out the two pins and your ready to rock, but they won't budge. I have a Bushmaster 16" Carbine. |
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Read this section Install your own free-float rail system, step by step: here ar15.com/forums/topic.html?b=3&f=4&t=226782 Then come back.    If you have read that and it still does not work.. uh..... umm..  Hit it REALLY hard? 
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The answer is contained within your question, you just did not know it... Hint: bushmaster pins are pressed into place VERY tightly. Often, with a punch and hammer, you just mushroom them. Get on them quick and hard, don't pansy around. 5/16" punch to get them moving and a 1/8" to knock them clear. If that fails, take a stack of #8 washers about 3/16" thick and wrap tape around them, creating a short cylinder with a hole in the middle. Put this on the large end of the pin. Put the barrel with washers in a vise so you can PUSH the small end of the in against the FSB. The stack of washers is to give the pin room to move out as you sueeze. I have never met a bushmaster barrel that this trick would NOT remove teh pins from. I just did one this way yesterday, but I have now made a little steel block better suited to the job. |
| I would suggest you buy the Brownells Taper Pin Starter #827-530-320 ($6.57) and their AR-15 Front Sight Bench Block #080-000-252 ($35.97). I have removed about several FSB’s and have never had a problem using these tools. Buy correct tools and you won't have any trouble with the Bushmaster Taper Pins. |
Randall if you ever offer this new steel block for sale, put me down for the very 1st one. I friggin' hate taking off FSB's on Bushys. I usually soak in Kroil for several hours and still have to beat the crap out of them to make them move. |
As hard as I've hit some Bushmaster and Colt taper pins, I'd think I'd blow one of those blocks into pieces. Some claim they're pretty tough, but I don't think I'd trust them. YMMV. |
Buy one. If you can break it in half by knocking taper pins in and out, I will pay for it. It's THAT tough. I use one almost daily. I have had to make some extra cuts in it because it will not fit some barrels and FSB's as it comes, but it's good stuff. |
I agree if you can break one, you would live up to your namesake.
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