2nd AR. 14.5 FSB Carbine vs midlength

[crosseyedshooter]

I’ve always thought that Centurion Arms C4 rails with FSP cutout made a lot of sense. They’re a clamshell design that lets you remove the rail without removing the FSP and attaches to the M4 barrel but. The C4 comes in Mlok and would snap right on a Colt upper. As already mentioned, 14.5” mid-length can be ammo sensitive. The current climate is a reminder to have something that’ll eat steel case and whatever’s available.

[Wake27]

14.5 mids haven’t been ammo sensitive for at least 10 years.


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[opngrnd]

I'd recommend the FSB w/Mlok out of the choices you presented. Just my preference.

[jec1521]

I'd recommend the FSB w/Mlok out of the choices you presented. Just my preference.

Carbine or mid?

[opngrnd]

Carbine or mid?

Mid. Smoother functioning, easier on it's own parts(even if it's only by a little bit) and even at 5'10", I appreciate the extra 2" of rail space. I also appreciate the additional 2" of sight radius.

[Basher]

Mid. Smoother functioning, easier on it's own parts(even if it's only by a little bit) and even at 5'10", I appreciate the extra 2" of rail space. I also appreciate the additional 2" of sight radius.

All of this. Outside of an SBR/pistol build, I don’t see me ever buying a carbine length setup again. Mid runs so much smoother that I don’t see the need, and if you’re going to run irons, additional sight radius is never a bad thing.

[26 Inf]

I'm going to third the motion, I'd get a mid-length with a FSB.

I like the Magpul SL hand guards, although the regular MOE's aren't really that much bulkier.

For the rear sight, if you are happy with fixed elevation, I'd get a Troy fixed Battlesight. If you want an elevation adjustable rear sight, this little thing has worked well for me:

https://www.amazon.com/UTG-Super-Pic.../dp/B077BHS1BK

Don't let the UTG scare you away, it isn't a bad little unit. I applied the Revised Improved Battlesight Zero (RIBZ) to the rear sight and found it to work at 25, 50, 100, and function as normal at 300 - haven't shot further yet. Here is the best explanation I've found since Molon's pictures dropped off his explanation on this site:

https://www.ar15.com/forums/ar-15/RI...et_/18-328143/

Just get a lower 1/3 riser if you want to run a one power dot.

Of course, you are going to have to pin the muzzle device, if you are willing to spend more than what the extended BCM A2 will cost, I'd go with one of these:

https://www.jprifles.com/buy.php?item=JPFH-556L - my JP has a 'ping' to it, not really bothersome; really easy to pin and weld as it has a shroud which foes over the barrel, so you aren't drill into the thinnner threaded portion of the barrel - also bring's a 13.7" to 16.1" once installed.

http://www.smithenterprise.com/products06.05.html - the vortex rings like a tuning fork which bugs some folks

[grizzlyblake]

If I go midlength, BCM has these in stock with FSB. One with a quad rail and one with a MCMR mlok. Is it worth it to get the mlok over quad rail for same price? Any negatives to these smaller 9 inch rails with a FSB where I would regret not having a longer rail?

https://bravocompanyusa.com/bcm-stan...9-handguard-1/

https://bravocompanyusa.com/bcm-stan...r-9-handguard/


Or I can get a carbine length, but they dont have LW barrel configuration so I am assuming a socom setup would be better than the govt profile

https://bravocompanyusa.com/bcm-stan...r-7-handguard/

If you're going to buy, go ahead and do it right now. That BCM LW you linked is what I'd get in a hot second.

BCM had pretty much no uppers recently, then their "restock" is only FSBs. I don't know why, but I imagine supply issues with LPGBs or something.

Regardless, it's not like it's a great time to be picky about ARs and that BCM will serve you well.

[jec1521]

If you're going to buy, go ahead and do it right now. That BCM LW you linked is what I'd get in a hot second.

BCM had pretty much no uppers recently, then their "restock" is only FSBs. I don't know why, but I imagine supply issues with LPGBs or something.

Regardless, it's not like it's a great time to be picky about ARs and that BCM will serve you well.

I agree. Now the question is, quad rail or mcmr?

[opngrnd]

I agree. Now the question is, quad rail or mcmr?

MCMR all the way. You'll appreciate the ergonomics. There's a reason plenty of people have swapped to mlok from quad rails.