Handguard length for future 12 GB

[Snakeplissken]

Anybody running a 12" hand guard on a 12" barrel? The reason I ask is because I haven't seen whether the SixFive GB barrels are actually 12" or something else.

I would like to use an Aero quantum guard on the 65 GB barrel because I like the looks, features, and price, but the only size options in that offering is 9" and 12". I would like it to be as close as possible. Currently in acquisition phase as things become available but am planning on running a Rearden SPB brake and 8"ish suppressor with plan B mounts. If 12" is going to cover up too much, I guess I'll have to go with the 9" option or find a different hand guard.

Thanks

[Bigs28]

I use a 12" and a 9". My 12" is a midwest industries suppressor compatible which is actually 12.625" so my suppressor sits inside the handguard over an inch. I would not shoot it with a break on and not the suppressor because it would blow the handguard apart. My 9" handguard leaves a couple inches between the end of handguard and beginning of suppressor.

[mel]

i dont have a 12 on mine but heres a 10" hg on a 12 barrel



the next pair of 6 arc 12" barrels i have comming one will prolly get a 12inch hg with a linerar comp and the other a 10" again

[mel]

btw

https://kmtactical.net/product/12-inch-slim-mlok-rail/

https://kmtactical.net/product/10-non-indexing-mlok-rail/

https://kmtactical.net/product/10-a-c-e-series-mlok-handguard/

[Snakeplissken]

Thanks for the info, pics, and alternatives (I like the 10? A.C.E. one).

How mush space is needed between then hand guard and can? I am purchasing materials to make a 1.625" can and see that the quantum has a 1.78" inside diameter that mentions it's good for most 1.5" cans. I am assuming it would also be good for 1.625" as well but didn't mention it because it's not as prevalent.

[Lastrites]

Do you want to ever shoot it without a suppressor, if yes get a shorter rail. "I am purchasing materials to make a 1.625" can and see that the quantum has a 1.78" inside diameter" the can may end up making contact with the rail while shooting as that is a pretty close fit.

[mtnlvr]

I use a 12" and a 9". My 12" is a midwest industries suppressor compatible which is actually 12.625" so my suppressor sits inside the handguard over an inch. I would not shoot it with a break on and not the suppressor because it would blow the handguard apart...

Would it really? Last weekend I shot my 12" Grendel with Thunder Beast brake using an H or X style rest bag that's ~12" long...it reached within ~1/2" of the end of the muzzle device. I was worried that the muzzle blast would shred my bag, especially since it's taped shut due to a fried shooting through it. The bag survived. To be clear, I was shooting subsonic so that will make a difference. It just seems that if my shooting rest bag can survive subsonic blast, the an aluminum handguard would survive
Supersonic blast of a 6.5 Grendel.

Does anyone have video of this actually happening?

[RobertFL]

6Pz6c3v.jpg found this picture on another thread.