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Posted: 11/7/2015 7:58:46 PM EDT
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I just bought a 14.5" mid length upper and I want to remove the standard flash hider and install a Griffin Armament muzzle device. What's the best tool to use to secure the upper while removing and installing muzzle devices? I only have about 3.5" from the gas block to the crush washer. |
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14.5" upper...Is your muzzle device pinned and welded? Because that will complicate things a bit.
Barrel vise block is the absolute best way but a reaction rod or MagPul BEV block will work, too. The danger comes if an improperly torqued barrel extension comes loose. What brand is your upper? (Radical Firearms barrels are known to have this issue) |
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Quoted: 14.5" upper...Is your muzzle device pinned and welded? Because that will complicate things a bit. Barrel vise block is the absolute best way but a reaction rod or MagPul BEV block will work, too. The danger comes if an improperly torqued barrel extension comes loose. What brand is your upper? (Radical Firearms barrels are known to have this issue) No the muzzle device is not pinned and welded. It's going onto my sbr lower. It's a BCM BFH upper. |
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Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? Quoted:
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Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. |
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You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. Quoted:
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Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. I couldn't have said it any better. 
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Quoted: You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. Quoted: Quoted: Quoted: Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. Okay cool. Thanks for the explanation. Had to google barrel extension to see what it was. So the barrel extension is pinned to the barrel and using the Reaction Rod could cause the pin to shear? |
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Okay cool. Thanks for the explanation. Had to google barrel extension to see what it was. So the barrel extension is pinned to the barrel and using the Reaction Rod could cause the pin to shear? Quoted:
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Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. Okay cool. Thanks for the explanation. Had to google barrel extension to see what it was. So the barrel extension is pinned to the barrel and using the Reaction Rod could cause the pin to shear? "Could" yes. Most likely would not. But purchasing an expensive Reaction Rod to perform a task where barrel blocks are the superior and proven correct tool for the job would be rather foolish. ETA: not necessarily the pin to shear but the extension and barrel to separate. |
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Quoted: "Could" yes. Most likely would not. But purchasing an expensive Reaction Rod to perform a task where barrel blocks are the superior and proven correct tool for the job would be rather foolish. ETA: not necessarily the pin to shear but the extension and barrel to separate. Quoted: Quoted: Quoted: Quoted: Quoted: Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. Okay cool. Thanks for the explanation. Had to google barrel extension to see what it was. So the barrel extension is pinned to the barrel and using the Reaction Rod could cause the pin to shear? "Could" yes. Most likely would not. But purchasing an expensive Reaction Rod to perform a task where barrel blocks are the superior and proven correct tool for the job would be rather foolish. ETA: not necessarily the pin to shear but the extension and barrel to separate. I will be making a set of barrel blocks then. Thanks. |
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how much will it cost you to make them and how long will it take ? you can buy them on ebay fairly cheap, i bought the aluminum ones and they work great.
http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=Barrel+Vise+Jaws&_sacat=0 |
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Barrel blocks or Geissele Reaction Rod will accomplish what you want to do OP.
A BCM barrel is a known good and their barrel extensions should be torqued to the 150ft-lb spec and if changing a muzzle device on your upper causes the barrel to come out of it's extension, BCM will take care of you. Sometimes you can't clamp a barrel because the handguard won't come off so the Geissele Reaction Rod would be the easiest method to accomplish what you want. Companies like Radical have had their BEs come loose for whatever reason, but I don't think you'll have a problem with a BCM barrel. FWIW, I used my reaction rod to remove a KAC URX2 Rifle Length handguard from a BCM CHF upper when I bought that handguard from someone here. If you know anything about the KAC URX, you'll know it has blue loctite applied to both the receiver, rail, and barrel nut. I just used head patiently to get it to warm up and went to work. |
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how much will it cost you to make them and how long will it take ? you can buy them on ebay fairly cheap, i bought the aluminum ones and they work great. http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR0.TRC0.H0.TRS0&_nkw=Barrel+Vise+Jaws&_sacat=0 Clamp two scraps of wood together and run a spade drill bit down the middle of them. Wrap the barrel with a bicycle inner tube if you need more grip than what the bare wood provides. |
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If you get aluminum vise blocks, you may want to buy some thick leather to put in between the barrel and the blocks. This will help with fit between the grooves in the blocks and your barrel's diameter, and will help with the vise grip the barrel better, too.
I like to keep my work secured really close to where I'm working on it, so I use vise blocks whenever I do muzzle device work. Sometimes a standard set of vise jaw blocks won't work, such as with really short barrels. In this sort of situation, get yourself two blocks of hardwood, bore out a hole slightly smaller than the barrel diameter where you're going to hold the barrel, then smooth the bored hole with medium grit sandpaper. This won't do anything super cool for the barrel, but it'll reduce the number of splinters you get. Now clamp the two pieces together and cut them to fit the space between the muzzle device and gas block/whatever was in your way. |
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I couldn't have said it any better.
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Ah no, Barrel blocks. Why barrel blocks over the Geissele tool? I have about 3.5" of barrel that I could clamp the blocks onto. Do you know where I could find appropriately sized barrel blocks? You would have to make some blocks out of wood to your dimensions. The reason that it is preferable to use barrel blocks instead of the Reaction Rod is because you could potentially move the barrel in the barrel extension. I couldn't have said it any better.
I'd have to agree.......it can loosen a barrel in the extension.....but if it does most likely the barrel was improperly torqued in the first place......extension torque on a 5.56 barrel is 150 ft/lbs +/- 5 lbs |
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