Which brand MK12 gas block would you go with?

[KCode]

I'm attempting to build a M4A1 clone and I got this barrel https://www.thoroughbredarmco.com/product/395/colt-14-5-gov-profile-m4-m4a1-barrel-c-mp-marked

A new Colt barrel for $139...Figured it would be hard to go wrong here.

It says it is dimpled for a MK12 gas block. Which brand would you guys go with?

 

[Pickle Rick]

PRI

 

[msgriff]

Are you going for the Mod 0 or Mod 1? For a low profile, as long as it says that it was built to MK12 Crane specs, it really doesn't matter.

This is what you should probably expect to get:

 

[DeathBeforeDismount]

M4a1 uses a FSB not a mk12 block.

Unless you are talking about a sopmod block 2.

 

[roostercogburn98]

M4 should have a front sight base as previously stated. There are a few companies that make a clamp on version, but if that barrel isn’t taper pin drilled, you won’t be able to get a correct FSB on there.

Mk18 mod 1 will use a gas block. If you want that era carbine look. But your barrel is too long and needs to be a 10.3 for a mod 1


I believe there is a fella who has some correct ones for sale on the px unless he sold out. Look for @ilikebmxbikes sale ads if I remember correctly

 

[ilikebmxbikes]

If you have autism and want to do a proper block 2 gun, i have authentic take off gas blocks. Early / mid m4a1 block 2 used older coronet machine corp with the greyish / blue finish. The later guns had the coronet machine corp dark gloss black finish and daniel defense blocks.

 

[Fresh2death]

I'm attempting to build a M4A1 clone and I got this barrel https://www.thoroughbredarmco.com/product/395/colt-14-5-gov-profile-m4-m4a1-barrel-c-mp-marked

A new Colt barrel for $139...Figured it would be hard to go wrong here.

It says it is dimpled for a MK12 gas block. Which brand would you guys go with?

I’d go with badger, dd or pri.