[OpDoc]

I have heard that some Tier One groups may be running The Surefire FA556-212 on the shorty 416 but before I dump several grand into my next SBR project, I was wondering if anyone has first-hand experience with this set-up;

Hoping to buy a 10.39" 416 upper and use with a FA556-212 (with FA556-212A) and run Federal 62gr. SOST ammo thru it. Since the 416 has no provision for suppressed fire I wanted to know if anyone has BTDT. This is planned for semi-auto fire only.

Thanks!

 

[MOAxp]

Yes it works. But make sure you buy the right connector as they make one specifically for the 10.4 bbl

 

[Chopstix Kid]

Do NOT run frangible ammo.

 

[skullbox]

you mean something like this:

H&K MR556 SBR 10.3" : Semi Auto Rifles at GunBroker.com

 

[OpDoc]

Yes it works. But make sure you buy the right connector as they make one specifically for the 10.4 bbl

I am planning on buying a factory 10.4" 416 upper from HK PARTS.NET if they ever get them in stock again...will that include the right connector, or is that a lower receiver part?

 

[OpDoc]

Do NOT run frangible ammo.

SOST ammo is not frangible;
USMC adopt new 5.56mm MK318 MOD 0 ammunition | The Firearm Blog

 

[pb_removed]

I am planning on buying a factory 10.4" 416 upper from HK PARTS.NET if they ever get them in stock again...will that include the right connector, or is that a lower receiver part?

???

I think MOA is referring to these:
Flash Hiders / Suppressor Adapters

Some only work with one type of can; others can work with several types. And obviously some won't work with the shorter barrel or standard AR (1/2-28) threading.