Free Float Rail Length M4

[Garavar]

Want to purchase a free float rail for my LE6920 (16" barrel) but I can't figure out what length to get.

Does anyone have photos of 7", 10", 12" and 15" so I can compare and decide which looks best for me? No sites ever show it to you on the weapon to visualize.

Also, I want to purchase a silencer so that means 15" rails are out correct? I am thinking it won't fit.

Thanks in advance from a noob.

[THORN74]

No pics but a 15" rail will go to the muzzle device. A 12" rail will just cover the gas block on a mid-length. And a 10" will just cover the gas block on an carbine length

Sent from my SM-G955U using Tapatalk

[everready73]

The 6920 has a FSP, so unless you are cutting it down or replacing it with a low profile gas block you will need a carbine length rail or one with a cutout such as Centurion C4 or Troy. If you dont have to worry about the FSB i prefer a 13'' rail on a 16'' barrel. Just personal preference. Just google for pics of various lengths, tons of stuff out there

[MegademiC]

Do you want to keep the fixed front sight?
Do you want to keep the existing barrel nut and not have to disassemble your rifle?

Personally, i think 12-14” handguards are ideal, but thats preference.

[corey4]

midwest industries 12" (actual length is 12.625) on a 16". this belongs to a good friend of mine. i got to use it shooting off some unconventional rifle rests; rock pile, hay bail, empty 55 gallon drum on it's side. for my build i am getting a hand guard that goes all the way to the muzzle. i found myself taking too much time making sure the bare barrel wasn't resting on anything, whereas if i had a full length, i could just get the rifle supported and go.

https://www.instagram.com/p/Bfa4iUHh...-by=solscud007

[crusader377]

I'm a big fan of the Troy Delta rail if you want a FF rail on a carbine with FSB. It is durable, easy to install, lightweight, and slim. Plus it is not overly expensive.

[npena84]

Centurion C4 FSB, it comes in 2 different configurations, one is cut just past the FSB. The other extends well past the FSB and its 12'. I own one, I have nothing but good things to say. It works around the FSB, doesn't require you to change the barrel nut, and is built for a carbine gas system.

[hile]

If you have a low profile gas block, I personally prefer the 13"-ish rails over the 15" rails.

[RVTMaverick]

Hey Corey, Your buddy has a sweet looking LEAD Slinger!

midwest industries 12" (actual length is 12.625) on a 16". this belongs to a good friend of mine. i got to use it shooting off some unconventional rifle rests; rock pile, hay bail, empty 55 gallon drum on it's side. for my build i am getting a hand guard that goes all the way to the muzzle. i found myself taking too much time making sure the bare barrel wasn't resting on anything, whereas if i had a full length, i could just get the rifle supported and go.

https://www.instagram.com/p/Bfa4iUHh...-by=solscud007

[Garavar]

Do you want to keep the fixed front sight?
Do you want to keep the existing barrel nut and not have to disassemble your rifle?

Personally, i think 12-14” handguards are ideal, but thats preference.

I would prefer to remove the front sight but not change anything (ie gas system). So what's ideal?