ACC blackout?

[jeff1012]

Can i convert my sig sauer M400 to the ACC blackout and if so how. Do i need just the upper assembly???
Thanks

 

[jeff1012]

Why silence no responses!!!!!!!!!!!!!!!

 

[Butshot]

I had to look up that model, looks like a standard DI AR, you can just swap out the barrel for a 300, or replace the entire upper, your BCG and standard mags should work.

 

[tywest]

Why silence no responses!!!!!!!!!!!!!!!

1:08 am

 

[Kyzrsoze]

Why silence no responses!!!!!!!!!!!!!!!

Remember that this is a forum populated primarily by Georgia folks. Not a lot of traffic here at 1:00 am.

 

[Chuckdog]

Is an M400 another clone of a Milspec AR15? If it's a clone then yes any AR15 upper should interchange. It it's a proprietary (unique design/parts) rifle, then I have no idea.

Many folks are simply changing the barrel on an existing 5.56/.223 upper. The bolt face and magazines are identical with the 5.56.

Just make sure you get the proper gas system/length, or you'll need a different gas tube too.

 

[user 71]

Also flash hider / muzzle device is 30 cal diameter and the common 30 cal threading.

 

[jeff1012]

Thanks everyone for the info