HG question.

[Rondeezy]

So I’m about to build 2 sbr’s one a 300blk with a 10.5” barrel and a 5.56 with a 12.5”. What’s the best handguard length for both that will make it look like this pic with a comp, but at the same time work with a suppressor? I basically don’t wanna see the barrel out the handguard but dont want issues if I shoot without the suppressor.

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[outrider58]

Unless you want a suppressor to go inside it, I would go 10" and 12". There may be some fractions with some brands(10.5" or12.6"). I would try to stay with exact measurements if at all possible.

 

[outrider58]

BTW, do not mount any scope or sight the way that sight is mounted in your picture(I know you already know, this is for others who may not).

 

[Rondeezy]

BTW, do not mount any scope or sight the way that sight is mounted in your picture(I know you already know, this is for others who may not).

indeed.


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[Rondeezy]

Unless you want a suppressor to go inside it, I would go 10" and 12". There may be some fractions with some brands(10.5" or12.6"). I would try to stay with exact measurements if at all possible.

I kinda do but I don’t want it being a problem to put on or take off.


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[RRomig]

Once I sight in with a can that gun never gets shot without one. If the barrel is shorter than the hand guard I’d never shoot the gun without a can that clears the hand guard. Other than tri lug or direct thread your going to want the barrel to extend past the hand guard. You won’t know the length of the hand guard you need until you know the length of the can and consider the other points I mentioned. GL

 

[Rondeezy]

Once I sight in with a can that gun never gets shot without one. If the barrel is shorter than the hand guard I’d never shoot the gun without a can that clears the hand guard. Other than tri lug or direct thread your going to want the barrel to extend past the hand guard. You won’t know the length of the hand guard you need until you know the length of the can and consider the other points I mentioned. GL

So basically if I go with a barrel that fits just cozy enough where the can is inside the handguard just forget about taking it off ?


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[outrider58]

Once I sight in with a can that gun never gets shot without one. If the barrel is shorter than the hand guard I’d never shoot the gun without a can that clears the hand guard. Other than tri lug or direct thread your going to want the barrel to extend past the hand guard. You won’t know the length of the hand guard you need until you know the length of the can and consider the other points I mentioned. GL

Ratchet mounts are GTG. Mounts like Surefire SOCOMs are not. You need access to the collar.

 

[outrider58]

So basically if I go with a barrel that fits just cozy enough where the can is inside the handguard just forget about taking it off ?


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I would not think that way. You will always need to take a can off.

 

[RRomig]

Yes you’ll want to be able to take the can off without having to take off the hand guard. That said some hand guards are not too bad to take off.

 

[TwinTurbskis]

I prefer my suppressors circumcised

 

[Rondeezy]

I prefer my suppressors circumcised

No turtleneck huh lmao pause


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[Rondeezy]

Yes you’ll want to be able to take the can off without having to take off the hand guard. That said some hand guards are not too bad to take off.

Yea I seen I think it’s SI who has a handguard that has a release at the bottom, however I don’t know how that will last with recoil and abuse.


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[RRomig]

Realizing aluminum displaces heat rapidly I’m still wondering how hot the handguard will be around the can. I would think that’s a no go zone.

 

[Rondeezy]

Realizing aluminum displaces heat rapidly I’m still wondering how hot the handguard will be around the can. I would think that’s a no go zone.

I thought about that, but I’ve seen so many videos with the can inside the Hg


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[Rondeezy]

Realizing aluminum displaces heat rapidly I’m still wondering how hot the handguard will be around the can. I would think that’s a no go zone.

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[outrider58]

Realizing aluminum displaces heat rapidly I’m still wondering how hot the handguard will be around the can. I would think that’s a no go zone.

I shoot an AR9 with a 5" barrel where the HG covers most of the can. Heat has never been a problem, but then it's a 9mm and not 5.56. With tri-lug, direct thread, or ratchet mounts, he could go longer with the hand guards. I'd recommend the HG be suppressor rated(wider) so as to allow better air circulation around the can if he goes HG over suppressor.

It's always nice to test new ammo without the suppressor on.

 

[Rondeezy]

I shoot an AR9 with a 5" barrel where the HG covers most of the can. Heat has never been a problem, but then it's a 9mm and not 5.56. With tri-lug, direct thread, or ratchet mounts, he could go longer with the hand guards. I'd recommend the HG be suppressor rated(wider) so as to allow better air circulation around the can if he goes HG over suppressor.

It's always nice to test new ammo without the suppressor on.

I ask cause I saw this upper from Aero that I’d be curious to purchase with the lower but the HG is 12” so that only leaves .5 which ain’t much lol https://www.opticsplanet.com/aero-p...eiver-m4e1-t-5-56-nato-w-s-one-handguard.html

 

[outrider58]

I ask cause I saw this upper from Aero that I’d be curious to purchase with the lower but the HG is 12” so that only leaves .5 which ain’t much lol https://www.opticsplanet.com/aero-p...eiver-m4e1-t-5-56-nato-w-s-one-handguard.html

A 10" HG should end right at the shoulder of the muzzle of a 10.5" barrel and a 12" HG should end at the same point on a 12.5" barrel. The only thing left sticking out beyond that point is the threaded part of the barrel.

 

[Rondeezy]

A 10" HG should end right at the shoulder of the muzzle of a 10.5" barrel and a 12" HG should end at the same point on a 12.5" barrel. The only thing left sticking out beyond that point is the threaded part of the barrel.

This is a 12.5 with a 12” hg looks like it’s inside no?

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