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Folks, I've attempted to jumpstart our mainstream revival in AR Discusions. It's a "Build" pic and discussion thread open to both cutout and non-cutout forends. Only rules, build must be an AR variant, have an FSB, and a free float forend. Thought this might give it a better chance. Hopefully it sticks this time. See you there. http://www.ar15.com/forums/t_3_118/712263_Official-Free-Float-FSB-Builds-Revival--Picture-Discussion-Thread-.html View Quote |
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Folks, I've attempted to jumpstart our mainstream revival in AR Discusions. It's a "Build" pic and discussion thread open to both cutout and non-cutout forends. Only rules, build must be an AR variant, have an FSB, and a free float forend. Thought this might give it a better chance. Hopefully it sticks this time. See you there. http://www.ar15.com/forums/t_3_118/712263_Official-Free-Float-FSB-Builds-Revival--Picture-Discussion-Thread-.html View Quote |
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You're doing the lord's work Sir. View Quote The new thread is doing well. Some nice builds being posted. A few shit talkers, but we have a Mod in there now keeping people focused on pics and specs. I've seen a few folks from here take the leap over. All are welcome. https://www.ar15.com/forums/t_3_118/712263_.html&page=1&anc=7428840#i7428840 |
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Geissele MK8 13 modified into a carbine FSP rail. You can do this to a MK8 9.5 (carbine), MK4 9.5 (carbine), MK4 13 (carbine), MK8 15 (carbine, midlength and rifle) and MK4 15 (carbine, midlength and rifle). To use taper pins you must use the set screw anti-rotation tabs version.
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To access the taper pins, the rail must rotate about 6 degrees to the side. AFAIK, all Geissele rails are going to traditional anti-rotation tabs just below the top rail. You won't be able to rotate the rail hardly any with those anti-rotation tabs. The set screw anti-rotation tabs allow rotation with the set screws backed out (even more if you remove 1/16" from each side on the inside). If you use two set screws on the bottom of the FSB, it won't matter which style you use. You may be able to use a clamp on FSB, I don't know.
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To access the taper pins, the rail must rotate about 6 degrees to the side. AFAIK, all Geissele rails are going to traditional anti-rotation tabs just below the top rail. You won't be able to rotate the rail hardly any with those anti-rotation tabs. The set screw anti-rotation tabs allow rotation with the set screws backed out (even more if you remove 1/16" from each side on the inside). If you use two set screws on the bottom of the FSB, it won't matter which style you use. You may be able to use a clamp on FSB, I don't know. View Quote |
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Barrel length on the rifle with the C4? 10.3 or 10.5?
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Geissele MK8 13 modified into a carbine FSP rail. You can do this to a MK8 9.5 (carbine), MK4 9.5 (carbine), MK4 13 (carbine), MK8 15 (carbine, midlength and rifle) and MK4 15 (carbine, midlength and rifle). To use taper pins you must use the set screw anti-rotation tabs version. https://www.AR15.Com/media/mediaFiles/138579/-20170615-183353-231452.JPG View Quote I'm thinking about doing the MK4 so that all four railed front sections are ahead of the FSB, and slick the rest of the way back. ::shrug:: One day I'll get around to it. ~Augee |
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I've been considering doing something similar to this with either a MK4 or an ALG. I'm thinking about doing the MK4 so that all four railed front sections are ahead of the FSB, and slick the rest of the way back. ::shrug:: One day I'll get around to it. ~Augee View Quote View All Quotes View All Quotes Quoted:
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Geissele MK8 13 modified into a carbine FSP rail. You can do this to a MK8 9.5 (carbine), MK4 9.5 (carbine), MK4 13 (carbine), MK8 15 (carbine, midlength and rifle) and MK4 15 (carbine, midlength and rifle). To use taper pins you must use the set screw anti-rotation tabs version. https://www.AR15.Com/media/mediaFiles/138579/-20170615-183353-231452.JPG I'm thinking about doing the MK4 so that all four railed front sections are ahead of the FSB, and slick the rest of the way back. ::shrug:: One day I'll get around to it. ~Augee I'd like to see a 10.3" with a 9.5 rail, 14.5" with a 13" rail and 16" mid length with a 15" rail. |
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Do it! I did everything in less than an hour with hand tools. I'd like to see a 10.3" with a 9.5 rail, 14.5" with a 13" rail and 16" mid length with a 15" rail. View Quote Planning on going with a 12" barrel and a PRI front sight. Don't know who's barrel I'm going to use yet. Attached File Attached File |
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Mk4 9.5. I cut it with my dremel then cleaned it up on my buddy's mill. Planning on going with a 12" barrel and a PRI front sight. Don't know who's barrel I'm going to use yet.https://www.AR15.Com/media/mediaFiles/76485/20170619-193844-234457.JPG https://www.AR15.Com/media/mediaFiles/76485/20170619-193852-234458.JPG View Quote View All Quotes View All Quotes Quoted:
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Do it! I did everything in less than an hour with hand tools. I'd like to see a 10.3" with a 9.5 rail, 14.5" with a 13" rail and 16" mid length with a 15" rail. Planning on going with a 12" barrel and a PRI front sight. Don't know who's barrel I'm going to use yet.https://www.AR15.Com/media/mediaFiles/76485/20170619-193844-234457.JPG https://www.AR15.Com/media/mediaFiles/76485/20170619-193852-234458.JPG |
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No. I'm planning on using the PRI front sight that everyone uses on the Mk12 Mod 0 builds. View Quote View All Quotes View All Quotes |
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Centurion C4 FSP rails on sale at DVOR.com. No experience with the site.
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Doriwoogie, what model DD rail is that on the left? Exactly what I'm looking for but haven't been able to id.
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Should have quoted... what DD rail on left?
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It would help if you quoted the picture.
DD's FSP rails as I recall: Mk18 RIS II FSP (discontinued) GL/SSC RIS II FSP (never sold) M4A1 RIS II FSP M4 9.5 FSP (discontinued) M4 12.0 FSP (discontinued) M4 12.0 midlength FSP (discontinued) Lite Rail I/II 9.5 FSP (discontinued) Lite Rail I/II 12.0 FSP (discontinued) Lite Rail I/II 12.0 midlength FSP (discontinued) OmegaX 12.0 FSP (discontinued) DDM4/Lite Rail III 12.0 FSP |
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It would help if you quoted the picture. DD's FSP rails as I recall: Mk18 RIS II FSP (discontinued) GL/SSC RIS II FSP (never sold) M4A1 RIS II FSP M4 9.5 FSP (discontinued) M4 12.0 FSP (discontinued) M4 12.0 midlength FSP (discontinued) Lite Rail I/II 9.5 FSP (discontinued) Lite Rail I/II 12.0 FSP (discontinued) Lite Rail I/II 12.0 midlength FSP (discontinued) OmegaX 12.0 FSP (discontinued) DDM4/Lite Rail III 12.0 FSP View Quote |
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http://i.imgur.com/VVSw33B.jpg View Quote |
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http://i.imgur.com/VVSw33B.jpg View Quote |
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Hello everyone. Sorry if this is in the wrong place, but it looked as good as any.
I'm wanting to put a rail on my upper with FSB that extends to the break. I would prefer key mod or Mlok ( don't care for quad rails anymore). But having a hard time finding one. Anyone have any recommendations? As bad as I hate to say it, looks like the UTG would be ideal..... But its UTG. Any thoughts or links would be appreciated. |
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Hello everyone. Sorry if this is in the wrong place, but it looked as good as any. I'm wanting to put a rail on my upper with FSB that extends to the break. I would prefer key mod or Mlok ( don't care for quad rails anymore). But having a hard time finding one. Anyone have any recommendations? As bad as I hate to say it, looks like the UTG would be ideal..... But its UTG. Any thoughts or links would be appreciated. View Quote |
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Carbine length with a 16" barrel. Thanks! View Quote View All Quotes View All Quotes |
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I don't know of any 15" carbine FSP rails off the top of my head. I'd recommend a modified Geissele Mk8 15". You may be able to mod a new set screw anti-rotation Mk14, I won't know until I get my hands on one. If you'd like to go this direction but don't have the tools or ability, I can help you out. View Quote I'm interested to hear about the mk14 when you get a chance to look at it. |
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I apprentice that. I'm guessing I would need to cut the top rail section out for the FSB, but is it a 2 piece rail? I'm interested to hear about the mk14 when you get a chance to look at it. View Quote View All Quotes View All Quotes Quoted:
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I don't know of any 15" carbine FSP rails off the top of my head. I'd recommend a modified Geissele Mk8 15". You may be able to mod a new set screw anti-rotation Mk14, I won't know until I get my hands on one. If you'd like to go this direction but don't have the tools or ability, I can help you out. I'm interested to hear about the mk14 when you get a chance to look at it. Everything would line up perfect with a Mk8 15: Attached File They just started making the Mk14 with anti-rotation tabs. They're all OOS since Geissele is sending them to people who had problem rails, who knows how long until they're available. |
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It's a one piece rail but is possible to install the FSB with taper pins if you mod it correctly. I have instructions on this page above and probably in this thread as well. I can also answer any questions you have and my offer still stands to do the mod for you. Everything would line up perfect with a Mk8 15: https://www.AR15.Com/media/mediaFiles/138579/16-330070.JPG They just started making the Mk14 with anti-rotation tabs. They're all OOS since Geissele is sending them to people who had problem rails, who knows how long until they're available. View Quote Either way, let's make FSP cutout rails great again, America! I plan on doing a Kino 12.5" setup SBR soon, and am trying to decide if I am going with a rail that is full pocket (of which there are few in midlength config) or something like a Samson/Centurion that has the cutout and puts rail under but not beyond. |
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I like it, just not sure you'd need that much rail-estate after the FSB. I guess you could do your light/IR combo, but even that wouldn't need that much space. Either way, let's make FSP cutout rails great again, America! I plan on doing a Kino 12.5" setup SBR soon, and am trying to decide if I am going with a rail that is full pocket (of which there are few in midlength config) or something like a Samson/Centurion that has the cutout and puts rail under but not beyond. View Quote View All Quotes View All Quotes Quoted:
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It's a one piece rail but is possible to install the FSB with taper pins if you mod it correctly. I have instructions on this page above and probably in this thread as well. I can also answer any questions you have and my offer still stands to do the mod for you. Everything would line up perfect with a Mk8 15: https://www.AR15.Com/media/mediaFiles/138579/16-330070.JPG They just started making the Mk14 with anti-rotation tabs. They're all OOS since Geissele is sending them to people who had problem rails, who knows how long until they're available. Either way, let's make FSP cutout rails great again, America! I plan on doing a Kino 12.5" setup SBR soon, and am trying to decide if I am going with a rail that is full pocket (of which there are few in midlength config) or something like a Samson/Centurion that has the cutout and puts rail under but not beyond. You're looking for something like the Mk18 RIS II FSP but for a midlength FSB, like an 11.5" rail? |
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Thinking of doing this with a CMR on a midlength. I'd like to use a 13" MLOK version, but if that won't work I'll step up to a 14.25" original model.
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Which rail is this? Also, why so few slots after the FSB? Not sure what you could even mount other than an offset light on there. It almost looks as if that rail is intended for a piston gun and the cutout is to adjust the piston, then the front two pic slots are for your iron.
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Which rail is this? Also, why so few slots after the FSB? Not sure what you could even mount other than an offset light on there. It almost looks as if that rail is intended for a piston gun and the cutout is to adjust the piston, then the front two pic slots are for your iron. View Quote But I am just guessing, I didn't have a say in its design. Still, I like it. Not your typical rail, and it clamps directly on a standard barrel nut. PIC THREAD You can see the underside a little better in this pic. My guess is it is cutout to allow you to mount a bayonet. Attached File |
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Thanks man. Yea I had one of the MI Gen 2 pocket rails in FDE and was not impressed. Lots of sharp, jagged edges, burs and such, and the coating was suspect. Not to mention that when I removed all of the bolts holding the bottom together, two of the thread inserts broke pieces off and fell out. It was enough for me to sell it and commit to only buying the DD/Centurion and other quality folks. I was disappointed because I had heard MI had such good quality and was a real value for the price point.
Your rifle looks great btw. I think you could get the right offset light mount on the front two rail sections. |
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