3) Feed Failures - Troubleshooting the Blowback 9mm AR
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- Опубликовано: 8 сен 2024
- Video 3 - Feed Failures. Troubleshooting the Blowback 9mm AR.
Causes and resolutions. This is NOT comprehensive and does not cover every possibility.
Troubleshooting Diagram: blowback9.word...
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I wear ear plugs, or muffs, or both, in every shooting video.
Love your videos, your site was also my first resource when building an ar9.
Even with an enhanced feed cone polishing the feed cone with Flits metal polish makes a huge improvement with feeding issues!
Enhanced feed cones are the way to go.
Taccom Super Feed 9mm barrels have a lower feed ramp AND an upper feed guide. They feed 100% reliable every time. You will never get a failure to feed with one of these.
They are another good option for feeding, but some folks were having accuracy issues a little while back. I need to confirm that those issues were all cleared up.
Doug, can you do a video on enhancing a feed cone with a Dremel? Thinking of doing it on mine but would love to get your opinion/ technique first.
I need to do this soon....
I polish my feed cone with mother rim polish and it takes hollow points with no problem. I repolish after I clean it just for gp.
Nice! I forgot to mention polishing - I'll add that to a video at the end with corrections and FAQ's.
I have a Foxtrot Mike FM9 that ran ball ammo fine when plinking. When I tried hollow points for the first time it jammed them into the feed cone (should mention I only use Glock factory mags). I swapped the barrel with a Macon and replaced the buffer and spring (KAK gold top/Wilson Combat) - it still jams the same way. I sent it back to Foxtrot to inspect and they assured me there was nothing wrong with it and of course didn’t have a single jam. I received it back, loaded up a magazine with hollow points, released the bolt… wanna guess what it did? I’m so sick of this thing!
Send me an email if you would like some help with this: blowback9.wordpress.com/contact/
Hey doug, Is the Macon armory mag catch the only one that will work for this problem? They seem to be out of stock unfortunately.
It's the only one I know about for the EPC-9 right now.
I’m curious Doug. I am currently building a 11” with everything you’ve mentioned in previous videos. Only thing I’m adding is a suppresor. Have you done any testing with a can? Would you recommend heavier buffer weight (kynshoot - carbine set up)
I haven't done testing per se, but I do have a can. The suppressor adds backpressure, so extra mass does help with bolt velocity and felt recoil. After a few shots the gas overwhelms any gas mitigation put in place (gasbuster handles, gas deflectors, etc), so I don't bother.