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Posted: 11/4/2013 6:51:55 AM EDT
Hello all just curious if anyone can help me remove my gas block, I know it is not a hard job but this one has me a little confused. There are no set screws and it is not clamped on. It is on a S&W MP15 OR carbine. I got one of the only few years they did this style of gas block. I cant tell how to get these pins out? I have not taken to beating on them with a hammer yet but I am looking at installing a Free float tube and wanted to see if I couldnt do it all myself and save a few bucks.
Is this a normal taper pin or is this some other type of pin? Also will I need to do anything to my barrel in order to install a new gas block? A lot of the ones I am seeing have set screws so I was just curious if I would need to dimple the barrel? Thanks all. Just wanted to research up and see if I could do this myself before ordering everything. |
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If no one else already knows about the SW OR gas block, and you can't get the info by emailing or writing or calling S&W, you'll need to measure each side of the pin to determine if it's a taper pin or a straight pin.
You will have to dimple your barrel for the set screws of a different gas block - that may be something you can do yourself, if you're handy with tools, or something you might prefer to send out. |
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IIRC S&W uses straight pins, which makes them a PITA because you have to overcome the press fit the entire length of the pin, wheras a taper pin, once it breaks loose your home free.
But to be on the safe side do as Circuits mentioned and measure the pin to make sure it is not a taper pin. Soak with Kroil overnight, support the GB well and take the largest punch you have and at least a 1# hammer and give it a solid blast. You need the mass and the inertia to break loose stubborn pins plus the heavier punch and hammer won't bounce as badly and leave pecker tracks on the pin and block. I actually turned down a 3/4" piece of hex stock about 8" long to a short taper and case hardened it for a taper pin punch. |
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