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

PSA gas tube vs CORRECT length


suzukiray

Recommended Posts

2 hours ago, suzukiray said:

The tube extends further into the upper than I would like but can anyone tell me if longer is an issue, vs shorter like the PSAs all seem to be made?

I have no idea how many times I've addressed this specific issue, or PSA in general.  It's all in here:

 

The exact information that you're looking for is when I start a major RANT about "proper gas timing."  It's in there.

Link to comment
Share on other sites

^^^  That gas tube protrusion is fine, and will not hinder your BCG travel, at all.  That's what we usually end up with on "the half-way barrels" on the gas port location.  AR-15 gas tubes are too short, and don't meet the minimum, but the AR-10 Carbine gas tube pushes it just past the midway point in the cam pin cutout - better than being too short, and it doesn't cause any issues with function.  Maybe you have a little LONGER unlocking time, instead of a SHORT unlocking time - but it's better for a gas gun to have the longer time, vs. the early attempt at unlocking, from a short gas tube.

 

This was your reply so I am going with your "Longer will be ok, shorter will be issues" answer. That was easy, thanks.

Edited by suzukiray
Link to comment
Share on other sites

4 hours ago, suzukiray said:

^^^  That gas tube protrusion is fine, and will not hinder your BCG travel, at all.  That's what we usually end up with on "the half-way barrels" on the gas port location.  AR-15 gas tubes are too short, and don't meet the minimum, but the AR-10 Carbine gas tube pushes it just past the midway point in the cam pin cutout - better than being too short, and it doesn't cause any issues with function.  Maybe you have a little LONGER unlocking time, instead of a SHORT unlocking time - but it's better for a gas gun to have the longer time, vs. the early attempt at unlocking, from a short gas tube.

 

This was your reply so I am going with your "Longer will be ok, shorter will be issues" answer. That was easy, thanks.

Yep, that's the exact rant, on those halfway-barrels, with the in between gas port drilling...   Not LR-308 or AR15 location, and not AR-10 location, either - just in between.  That's what it looks like with the AR-10 gas tube in there.   Longer, and more gas timing is better than shorter, and not-even-spec gas timing.   :thumbup:

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.

Guest
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...