Got my new JAKL and was super excited to get it out to the range.
It shot a round, ejected the spent, and did not load the next round. I changed mags, and it was shooting 3 before doing the same thing. I messed with the adjustable gas, but it was on the highest setting first. This gas knob is the non ‘S’ marked one. Has anyone had similar issues and found a solution?
Here is @Anthony_PSA 's response:
Correct. And at full gas it is having trouble cycling. Also, I have the 4 position gas block.
Is the carrier and sled clean and well oiled? I didn’t take the sled (metal piece inside the upper that the charging handle inserts into) out of mine when I first got it. It got gunked after a while and after pulling the charging handle back to seat a round it got stuck in the rearward position. The spring wasn’t strong enough to send the bolt home. Took the bolt out and oiled and cleaned the sled really good and now it’s smooth like butter.
Not saying its the same issue, but I know mine wouldn’t have returned to battery had I been shooting it instead of just seating a round.
Excellent description, @KRoyal . There’s actually quite a bit more to lubing the JAKL than the AR, and the sled seems to make a big difference. Every unlubricated friction point brings you closer to a “failure to feed/eject”. Not saying that’s Bimmertech199’s issue. Even the BCG has more points to lube.
It took me several “days” of assembly/disassembly to get the hang of pulling the sled out. I think I’m just a slow learner - maybe persistent, but slow 
I took it home after the range and cleaned/lubed it really well. I hadn’t previously lubed it at all. It feels better now, but still not super smooth. Hopefully I’ll have a chance to shoot it this weekend and that will have done the trick.
What caliber and ammo are you using? Suppressor?
It is PPU 5.56 ammo unsuppressed
UPDATE After cleaning/lubing, I took it to the range yesterday. The failure to feed issue seems to have gone away. HOWEVER, I am now getting light primer strikes. I got about 7 or 8 out of two mags. We took those rounds and put them in a mag and put them through my buddy’s Geissele AR. Not a single issue. Anyone have any ideas for this new problem?
Did you change out the factory trigger?
Also when you cleaned the bolt carrier could any debris have gotten in the firing pin hole?
I just chased this light primer strike issue on one of my Rimfire PRS comp guns. Finally figured out it was an issue with the aftermarket trigger kit I had installed. Put a different KIDD trigger in and it has had no other issues with light primer strikes.
I did not. The original trigger has been in it the whole time.
I really don’t think the BC could have gotten anything in it, but I will check when I get it apart.
Brass or unspent powder?
I think it was a mix, but mostly Brass. The entire innards of that pistol looked like the victim of a Glitter-Bomb.
Interestingly, the easily-accessible parts were clean and well-lubed, and exhibited only light-moderate wear. This cop actually seemed to have shot his gun and cared for it - he even put the Sig Trigger-kit in it.
But deep inside and under the grips, it was a mess.
All this was full of greasy-glitter, in the corners and crevices:
Edit: Found ‘Em!!
I actually took these, AFTER I had wiped some of the stuff off a bit - wanted to show my Brother what a mess it was.
Clean now.
It was an Effort. Worth it, that pistol shoots and handles really well. I’m jealous of The Wife, probably gonna have to get one for me.
ANYWAY…. My Point was, those metal flakes and powder fouling can get in Anything. Even places you think it can’t. Absolutely the stuff easily gets inside the Bolt of an auto-loading rifle.
Im going to piggy back off of this thread due to the inability to post a new topic.
I recent purchased a Jakl (the 13.7in barrel with 12in handguard.) and i love the rifle, i did take it shooting for the first time yesterday to get it zeroed but i noticed the handguard gets extremely hot, due to experience i know it means there is a big leak between the gasblock to the main receiver, now with it being a monolithic and that i havent fully disassembled my rifle yet (which i will today) has anyone had a problem of BNIB having this kind of issue?
Have you ever shot an AK? They get hot. Gas blocks naturally seal themselves with soot over time, but any sort of rapid fire is going to get them hot.
yes i have shot aks even some class 3 aks, but the hand guard was getting extremely hot even doing 2+1 shots. (fire two shots quick, reload, fire one shot). i had to set it down for how hot it got and it was basic winchester white box 55gr ammo.
by chance do you know how the guide tube attaches to the gas block? i took the rifle apart completely and noticed the tube has play in it, (i am able to twist it left and right easily) is it screwed in or friction held?
