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Posted: 11/3/2011 3:31:49 PM EDT
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After MONTHS of researching and learning, I am days away from getting my first AR. Very shortly thereafter, I am going to start the paperwork for SBRing it. My question is this- can ALL A-frame style FSB's be removed and replaced with a low-profile FSB or is there something I need to be looking for?
I know the easy answers are "Get a low profile to begin with" or "Get a short upper to begin with."  I already know that, but I am wondering for future reference, and because I am seeing a lot of great deals on uppers with A-frame FSB.
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Quoted:
After MONTHS of researching and learning, I am days away from getting my first AR. Very shortly thereafter, I am going to start the paperwork for SBRing it. My question is this- can ALL A-frame style FSB's be removed and replaced with a low-profile FSB or is there something I need to be looking for? I know the easy answers are "Get a low profile to begin with" or "Get a short upper to begin with." I already know that, but I am wondering for future reference, and because I am seeing a lot of great deals on uppers with A-frame FSB.Yes. |
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Quoted:
Quoted:
After MONTHS of researching and learning, I am days away from getting my first AR. Very shortly thereafter, I am going to start the paperwork for SBRing it. My question is this- can ALL A-frame style FSB's be removed and replaced with a low-profile FSB or is there something I need to be looking for? I know the easy answers are "Get a low profile to begin with" or "Get a short upper to begin with." I already know that, but I am wondering for future reference, and because I am seeing a lot of great deals on uppers with A-frame FSB.Yes. I like a simple answer! Is it as easy as removing the pins and pulling it off, or will it be more in depth? |
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Quoted:
Quoted:
Quoted:
After MONTHS of researching and learning, I am days away from getting my first AR. Very shortly thereafter, I am going to start the paperwork for SBRing it. My question is this- can ALL A-frame style FSB's be removed and replaced with a low-profile FSB or is there something I need to be looking for? I know the easy answers are "Get a low profile to begin with" or "Get a short upper to begin with." I already know that, but I am wondering for future reference, and because I am seeing a lot of great deals on uppers with A-frame FSB.Yes. I like a simple answer! Is it as easy as removing the pins and pulling it off, or will it be more in depth? Yes an no. The pins can be a PITA to get out at times and youll need the right tools to do it. Check this thread for easy instructions on how to do it. http://www.ar15.com/forums/t_3_4/226782_Assemble_your_own_LOWER__UPPER__FREE_FLOAT__TRIGGER__GAS_BLOCK___Step_by_step_instructions_.html |
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Normally it is a matter of driving out two pins and tapping it off with a block of wood.
You have to spin your flash hider off to get the old oneoff and the new on. Just like anything else mechanical there are variables and Murphy to look out for. If you happen to get an upper with a pinned on flash hider, that will be an additional complication. Some FSB's are corroded or otherwise stuck on and have to ce cut off. The pins are tapered and only go in and out one way. I don't recall what direction that is but is easily found on the web. Not rocket science. I'm sure you can handle it. |
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Not all pins are tapered, my LMT has non-tapered pins.
Also, if you decide to punch them out, I found that a hard surface works better than wood. Another option is cutting the sight off and shaving it down to fit under a handguard - you can do this without removing anything from the barrel. |
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