Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Looking for an AR-15 expert, intermittent feed issue
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="cohunt" data-source="post: 2496345" data-attributes="member: 94491"><p>The SA gb is a bleed off style--4.5 total turns ( 18 clicks) is full open-- if you go less then you limit the gas, if you go more you limit the Gas by using the bleed off design function.</p><p></p><p>When at 4.5 turns out you should be ejecting brass in the 3 to 330 positions....if it's further back you either need lighter spring/buffer or more gas.</p><p></p><p>I saw a few other threads saying they ate running .100-.106" gas hole size with the +2" gas length system.</p><p></p><p>As a last resort you can open up the gas orifice 1 or 2 drill sizes BUT try everything else first.</p><p></p><p>Make sure your gas block hole is lined up with the hole in your barrel too--- if you pull the gb off you should be able to see a " soot ring"-- make sure it's centered around the hole in your barrel-- also check the barrel around the block for soot and the has tube where it goes into the block for soot--- if you have a bunch of soot in one of those 2 places you have a gas leak</p><p></p><p>At this point I'm thinking 1 of 2 issues, either a simple mag lip tweak, or you are right on the edge of enough gas and when you add that extra pressure on the bottom of the bolt it's slowing down the carrier enough to cause issues </p><p></p><p>I know originally, the Grendel mags had some cirvature/geometry issues-- but that was years ago with high cap mags and was under assumption that was long past</p></blockquote><p></p>
[QUOTE="cohunt, post: 2496345, member: 94491"] The SA gb is a bleed off style--4.5 total turns ( 18 clicks) is full open-- if you go less then you limit the gas, if you go more you limit the Gas by using the bleed off design function. When at 4.5 turns out you should be ejecting brass in the 3 to 330 positions....if it's further back you either need lighter spring/buffer or more gas. I saw a few other threads saying they ate running .100-.106" gas hole size with the +2" gas length system. As a last resort you can open up the gas orifice 1 or 2 drill sizes BUT try everything else first. Make sure your gas block hole is lined up with the hole in your barrel too--- if you pull the gb off you should be able to see a " soot ring"-- make sure it's centered around the hole in your barrel-- also check the barrel around the block for soot and the has tube where it goes into the block for soot--- if you have a bunch of soot in one of those 2 places you have a gas leak At this point I'm thinking 1 of 2 issues, either a simple mag lip tweak, or you are right on the edge of enough gas and when you add that extra pressure on the bottom of the bolt it's slowing down the carrier enough to cause issues I know originally, the Grendel mags had some cirvature/geometry issues-- but that was years ago with high cap mags and was under assumption that was long past [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
AR15/10 Rifles
Looking for an AR-15 expert, intermittent feed issue
Top