View Full Version : Looking for a FSP Rail system for a pinned flash hider upper
I have my M4gery upper that never gets shot. With the pinned flash hider, I'm wondering if I can get a bolt on rail system to extend past the Fixed Front Sight.
If I must have the flash hider removed, I'll be going with a different rail/gas block setup.
I appreciate the help.
What barrel nut? The Centurion C4 is a solid rail that uses the USGI barrel nut.
thopkins22
11-19-14, 08:00
What barrel nut? The Centurion C4 is a solid rail that uses the USGI barrel nut.
The C4 is an excellent rail from a company owned by an excellent American that does exactly what you're asking.
I'm very pleased with my Troy and I believe they now have a Keymod version.
https://troyind.com/rail-systems-accessories/rails/drop/delta
It was simple to install and took less than 10 minutes. It gives you the real estate in front of the FSB and has built in QD sling sockets on each side. You will need to remove the sling swivel under the FSB.
http://i828.photobucket.com/albums/zz209/El_CidAF_ResQ/Mobile%20Uploads/Screenshot_2014-09-25-08-03-46_zps344a89e4.png[/QUOTE]
Singlestack Wonder
11-19-14, 08:12
Highly recommend the Daniel Defense Omega-X 12FSP. Easy to install/remove and rock solid. The attachment method is an example of great engineering design. I have several other rails from Daniel Defense including Lite and RIS II, but the last 4 rifles have gotten Omega-X (well, one BCM KMR sneeked in).
justin_247
11-19-14, 08:32
Highly recommend the Daniel Defense Omega-X 12FSP. Easy to install/remove and rock solid. The attachment method is an example of great engineering design. I have several other rails from Daniel Defense including Lite and RIS II, but the last 4 rifles have gotten Omega-X (well, one BCM KMR sneeked in).
He has a pinned flash hider... unless he's already running a shorter Omega X rail that allows him to use his FSP, he cannot use any of these rails without having a smith remove the flash hider.
To the OP: the Centurion C4 FSP is what you're looking for if you want to use 1913 rails:
http://www.centurionarms.com/product-p/0609-fsp.htm
The Troy Delta is an alternate solution if you want to have a more slick handguard without all the extra rails:
https://troyind.com/rail-systems-accessories/rails/two-piece-free-float/delta
Plumber237
11-19-14, 08:47
Another vote for the Centurion C4 12 FSP rails, I installed them myself earlier this year on my primary rifle, and love everything about them. If you've got a Dremel, a vice, a hole punch for the gas tube pin, and a channel lock pliers if your tube is a tough remove (my rifle doesn't have many rounds through it, so I was able to remove the tube by hand), then you won't have any issues doing a self-install.
I believe the Centurion Arms C4 12 FSP is discontinued. I have 2 carbines with them and was contemplating getting another for my other carbine. Only source I found for it was Rainier Arms, two Sundays ago they had 3 left ( I didn't have funds at the time) now they are out of stock. Centurion Arms doesn't even list it on the website anymore. Subsequent searches all come up with out of stock. The Troy delta looks good and I will probably purchase one.
I appreciate the replies everyone. Looks like I need to do some research between the Centurion and Troy rails.
I appreciate the replies everyone. Looks like I need to do some research between the Centurion and Troy rails.
i am interested in this also, have a 6920 upper with crap surefire rail that i would like to replace. if Troy has a new keymod FSP that might be the ticket.
C4 carbine cutout is what I got for my 6920. With the gear sector mount a light can still go in a comfortable position and it saves a little weight without the extra rail. The weight is fairly negligible but I liked the look a little better than the full rail.
I'm very pleased with my Troy and I believe they now have a Keymod version.
https://troyind.com/rail-systems-accessories/rails/drop/delta
It was simple to install and took less than 10 minutes. It gives you the real estate in front of the FSB and has built in QD sling sockets on each side. You will need to remove the sling swivel under the FSB.
http://i828.photobucket.com/albums/zz209/El_CidAF_ResQ/Mobile%20Uploads/Screenshot_2014-09-25-08-03-46_zps344a89e4.png
I have two Troy's also: a Delta like above and a VTAC Delta, and I really like both of them. Nothing to remove, just install and they work and lock in like a champ. I also have a Midwest Industries FSP rail and I like it too, but it feels heavier than my Troy rails. I did have to remove the Delta ring to install the Midwest Industries rail. Not hard at all, and takes no time to do if you have a dremel tool.
http://i5.photobucket.com/albums/y194/Razor24/AR%20Junk/IMG_1508_zps7d1c8ed0.jpg (http://s5.photobucket.com/user/Razor24/media/AR%20Junk/IMG_1508_zps7d1c8ed0.jpg.html)
Plumber237
11-20-14, 05:53
I believe the Centurion Arms C4 12 FSP is discontinued. I have 2 carbines with them and was contemplating getting another for my other carbine. Only source I found for it was Rainier Arms, two Sundays ago they had 3 left ( I didn't have funds at the time) now they are out of stock. Centurion Arms doesn't even list it on the website anymore. Subsequent searches all come up with out of stock. The Troy delta looks good and I will probably purchase one.
If this is the case that's a damn shame, those are some great rails. I had to order them as well through Rainier when I bought mine, at the time they were still listed on Centurion's website, but they were out of stock and Rainier wasn't.
justin_247
11-20-14, 06:53
If this is the case that's a damn shame, those are some great rails. I had to order them as well through Rainier when I bought mine, at the time they were still listed on Centurion's website, but they were out of stock and Rainier wasn't.
I'm pretty sure that Centurion is redesigning their C4 rails and they are discontinuing them slowly...
That being said, the link below goes straight to Centurion's website where you can order it... it says that it's a "LIMITED PRODUCTION RUN ITEM," so I'd jump on it while you still can.
http://www.centurionarms.com/product-p/0609-fsp.htm
Eurodriver
11-20-14, 08:43
Centurion is owned by a Navy SEAL, Troy hires one many consider an accessory to murder and anti-gun police chiefs.
Your call.
Centurion is owned by a Navy SEAL, Troy hires murderers and anti-gun police chiefs.
Your call.
Wow ! Learn something new everyday. Just did a little research on that. Never knew. Looks like I'll try to snatch up a "limited run C4 FSP" instead. Thanks for the info.
Singlestack Wonder
11-20-14, 11:30
He has a pinned flash hider... unless he's already running a shorter Omega X rail that allows him to use his FSP, he cannot use any of these rails without having a smith remove the flash hider.
To the OP: the Centurion C4 FSP is what you're looking for if you want to use 1913 rails:
http://www.centurionarms.com/product-p/0609-fsp.htm
The Troy Delta is an alternate solution if you want to have a more slick handguard without all the extra rails:
https://troyind.com/rail-systems-accessories/rails/two-piece-free-float/delta
My bad.....missed the pinned flash hider part.
fondled my rifle a bit last night... decided that its a pretty comfortable setup for what it is (KISS). Looks like i'll be building a new upper to compliment my other rifle when I want to shoot competitions with my wife. C4 rail is a very nice piece of kit though.
Centurion is owned by a Navy SEAL, Troy hires one many consider an accessory to murder and anti-gun police chiefs.
Your call.
I'm doing the same with my Colt 6920 right now...I really like how the Troy VTac Delta rail looks and works.
However lime you said about Troy.....Troys business practice late last year in trying to hire some people I don't respect from what I've rwad bothers me. I'd much rather support the owner of Centurion but they no long make a rail for a FSP install.
I looked at the Midwest Industries MI Gen2 FSP Carbine rail but I don't know how much about it other than the cost is great. I currently have a Midwest Industries drop in Carbine length drop in that's been great.
Man I'm soooo confused on what to do!
JBecker 72
12-14-14, 21:30
I'm a little late to the game, but I've had 2 MI 12" FSP rails now and they are pretty good for the money. I also had a Centurion on a middy and that was a good rail as well.
http://i149.photobucket.com/albums/s73/hownowbrowncow_02/Guns/D2280897-C623-4B12-91E5-12CC09B18E7D_zpsojxrjhmd.jpg
^^^^looks like you went all the way and replaced the balled nut too? Or is that the 2 piece rail from MI that you cut the Delta ring off and use the stock barrel nut? Thanks!
I'm fighting with myself about if I want a smooth rail like the Troy VTac Delta or a Quad rail like the photo above.
JBecker 72
12-15-14, 11:21
^^^^looks like you went all the way and replaced the balled nut too? Or is that the 2 piece rail from MI that you cut the Delta ring off and use the stock barrel nut? Thanks!
I'm fighting with myself about if I want a smooth rail like the Troy VTac Delta or a Quad rail like the photo above.
That's the 2 piece gen 2 rail that uses the stock barrel nut. That upper had a pinned flash hider and regular hand guards when I got it.
Troy fired that anti-gun police chief very quickly.
The Troy rail is a good product. If you like it get it. I have several of their products and I will be gettimg more. Don't pay attention to the interweb BS. People just want to bitch about stuff. Get what you want.
Why don't people focus on the real problems out there in the gun business, like the companies that don't like members of the Armed Forces. That would be better cause to get your panties in a bunch.
Dale Monroe was not the problem back in 1992, it was the people and policies that sent him there. Place the blame where it needs to be placed.
The Midwest Industries FSP rail is a very solid piece for the money. You have to take off the delta ring and sling swivel but everything else can stay. It's perfect for a 12 oclock light setup.
tango-papa
12-21-14, 23:02
I'm pretty sure that Centurion is redesigning their C4 rails and they are discontinuing them slowly...
Might you have a source for this information.
Damned if I wasn't getting ready to buy two of the C4 FSP rails and they are OOS everywhere.
tp
I like the MI FSP as well.
Not as solid a design as something like a DD, but I do like it a lot for what it is. I've never had a problem with it.
Centurion is owned by a Navy SEAL, Troy hires one many consider an accessory to murder and anti-gun police chiefs.
Your call.
only kooks think that and its 100% false, and im pretty surprised that this is allowed to be said about a legit company, let alone a site sponsor
I have a troy delta cut out on one AR and a daniel defense lite rail on another, for your needs the troy would be great but try to check one out in person
Scotter260
09-01-15, 13:47
Not sure if one is to use the search and post in an on-topic thread or post new so as not be accused of necro-thread-resurrection.
It seems I've read that many folks frown on the Troy VTAC Alphas as not being sturdy enough for a serious-use carbine. I have found they suit my needs for a light, thin, minimally-cluttered, rail that allows for 12 o'clock lighting and have two that have held up well for as serious as I've used them.
With that preface and adding that I don't want to cut another FSB nor buy another DD front sight - the Delta seems quite interesting. My question is are they poo-pooed on even more than the Alphas or do they hold up similarly?
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