Jump to content
308AR.com Community
  • Visit Aero Precision
  • Visit Brownells
  • Visit EuroOptic
  • Visit Site
  • Visit Beachin Tactical
  • Visit Rainier Arms
  • Visit Ballistic Advantage
  • Visit Palmetto State Armory
  • Visit Cabelas
  • Visit Sportsmans Guide

Armalite vs. DPMS-type gas blocks


Recommended Posts

I know that there's a difference in gas tube length between Armalite and DPMS type gas systems, but are there dimensional differences in the gas blocks themselves with regard to the location of the gas port? (It's so hard not to say gas-hole...LOL)My reason for asking is that I'd like to use a Noveske Switchblock on a DPMS-type barrel. I know I'll have to use the correct gas tube, but will the gas port line up in the gas block?

Link to comment
Share on other sites

Due to the varying sizes of gas holes, the hole in the gas block is designed much larger. I often describe it to people as putting a bucket over the drain in the sink. That's why your gb doesn't have to be 100% straight to function.

Piston systems are a little different.

The only time I'm aware of a gb being for a specific rifle is for the SASS barrels.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...