[cationgun]

So I took my Gen 2 out to the range yesterday to test all those SGM Tactical mags, great results overall. However I noticed the front sight post kept shifting to the left side as if it was coming loose on the barrel, and had to keep propping it back up against the bench on the firing line.

While cleaning it today I decided to investigate the front sight post issue, with a small amount of force it will rotate, but then I noticed it wasn't the front sight itself that was rotating, but the barrel itself!

Now this may be my first rifle, but I'm pretty sure the entire barrel is not supposed to rotate under any amount of force. This is concerning as I bought this thing also to be used for a home defense gun, and if I can't keep the front sight from moving then that is a serious issue...

Is there a way to tighten this up to keep this from happening? Or is this a factory defect that I should send back to Kel-Tec? Literally bought this gun a month ago, put probably 600 rounds in it total between the 3 trips to the range since.

 

[3wbdriver]

The barrel is Loc-tited into a sleeve in the pivot block, If you did a lot of rapid firing over those 3 range trips it is possible heat build up loosened the Loc-tite. I would recommend returning it to the mother ship so it is properly aligned while being reset. And then I would rethink possibly using it as an all metal AR-15 substitute. But that's just my $.02. It has happened before and will happen again, but it is not a common problem with the Sub2k.

 

[850sub]

The barrel is supposed to rotate. Thats how you fold it for storage.

 

[cationgun]

Found this thread and used it as a bit of a guide: http://www.thektog.org/forum/f85/loose-barrel-231352/

Couldn't get the sub 2k to lock in the unfolded position after getting the barrel tight and locked in place. Sat here for a couple hours messing with it. Ended up writing KT about it and hopefully they'll get back to me soon.

 

[cationgun]

The barrel is supposed to rotate. Thats how you fold it for storage.

Hehe, wrong axis of rotation

 

[Brawny]

The barrel is Loc-tited into a sleeve in the pivot block, If you did a lot of rapid firing over those 3 range trips it is possible heat build up loosened the Loc-tite. I would recommend returning it to the mother ship so it is properly aligned while being reset. And then I would rethink possibly using it as an all metal AR-15 substitute. But that's just my $.02. It has happened before and will happen again, but it is not a common problem with the Sub2k.

Nobody loves his kt's as much as I do but I agree. For purely defensive and shtf scenarios aks and ars and the like are better for such things.
Fun, neat, cool factor?
Can't be beat though.

 

[H2OMAN]

For purely defensive and shtf scenarios aks and ars and the like are better for such things.

I agree 100%, but your K-T is still better in those scenarios than a sharp stick and some rocks.

 

[Brawny]

I agree 100%, but your K-T is still better in those scenarios than a sharp stick and some rocks.

You've never seen my bowstaff skills!

Op, I have no doubt KT will take care of you.

 

[H2OMAN]

Op, I have no doubt KT will take care of you.

Their customer service is very good - Op, give them the opportunity to make it right.

 

[cationgun]

Ok, will be sending it into KT for repairs.

Has anyone here ever sent a sub 2k in for repairs? What sort of turnaround time did you have? Really don't want to be rifle-less for a while, might consider picking up something in the meantime...

 

[13brv3]

If you send the rifle in, you might want to ask about the updated front sight, unless your rifle already has it. The original sight has problems when used with suppressors, and my rifle is on the way back to KT for the new sight.

Post 37 of this thread shows the sight that was received by someone who was having suppressor mounting issues, and we're assuming this is the new sight. KT said new rifles are shipping with the new sight, but I haven't heard of anyone receiving one yet.

http://www.thektog.org/forum/f85/sub2000-9mm-gen-2-sight-issues-265280/index4.html

Cheers,
Rusty

 

[wriggly]

I haven't been on here in about 4 years and just logged on to check something out for a buddy and came on this thread.

I cannot believe subs are still having barrel rotating issues. The gen 1's had lock tite as the means of securing the barrel. After engaging their engineers in a dialogue I convinced them to pin the barrels, which they did. What happened? Did they go back to using lock tite again on the gen 2 guns?

 

[3wbdriver]

I haven't been on here in about 4 years and just logged on to check something out for a buddy and came on this thread.

I cannot believe subs are still having barrel rotating issues. The gen 1's had lock tite as the means of securing the barrel. After engaging their engineers in a dialogue I convinced them to pin the barrels, which they did. What happened? Did they go back to using lock tite again on the gen 2 guns?

Don't know on the Gen 2's. No one has volunteered a photo.

 

[haugrdr]

I think I can do it...where exactly do I aim the camera? What am I looking for?

 

[3wbdriver]

On the Gen 1 with the Sub folded you looked what would be just below the barrel on the pivot block. The pin was drilled and driven through what would be the high side of the block with it folded. If not pinned all you should see is plastic.

 

[haugrdr]

Is the little round thing to the left of the screw it? Looks like a pin to me.

Gen 2 sub, 9mm Glock version.

 

[haugrdr]

Found this thread and used it as a bit of a guide: http://www.thektog.org/forum/f85/loose-barrel-231352/

Couldn't get the sub 2k to lock in the unfolded position after getting the barrel tight and locked in place. Sat here for a couple hours messing with it. Ended up writing KT about it and hopefully they'll get back to me soon.

What did you tighten up? I think you tightened the wrong thing, that large nut should not even be finger tight ....that's how you adjust the trigger guard to lock the folding feature...not the place to tighten the barrel to the pivot block.

 

[3wbdriver]

Is the little round thing to the left of the screw it? Looks like a pin to me.

Gen 2 sub, 9mm Glock version.

No. There should be something that looks like a 1/8" roll pin pressed through between the pivot and the V notch on the bottom of the block.

 

[haugrdr]

No. There should be something that looks like a 1/8" roll pin pressed through between the pivot and the V notch on the bottom of the block.

CJ, this is the only thing I can find that looks anything like a pin. It's not a roll pin, it's maybe 1/4" wide. A magnet sticks to it, but not to the surrounding plastic. It seems to be "crimped" into place so that it doesn't move...you can see that in this blow up of the pic I took.

Maybe Kel Tec has come up with a new kind of pin?

 

[3wbdriver]

CJ, this is the only thing I can find that looks anything like a pin. It's not a roll pin, it's maybe 1/4" wide. A magnet sticks to it, but not to the surrounding plastic. It seems to be "crimped" into place so that it doesn't move...you can see that in this blow up of the pic I took.

Maybe Kel Tec has come up with a new kind of pin?

Possible, but the barrel actually threads into a steel sleeve molded into the block. The pictured part is probably a pinned side of the sleeve to ensure the sleeve is "clocked" properly in the plastic mold for thread to barrel alignment. But it is also knurled so plastic will flow into the knurling to hold it in place. A "pinned" barrel has a small hole drilled across the bottom of the barrel and through that sleeve and a pin inserted into the resulting notch in the barrel to hold it in alignment. AR gas blocks/front sights and AK front sights are pinned this way. It obviously requires a jig and a drill press for precision and I don't see that pin in your picture. Maybe Kel-tec thought they had the problem addressed with the new design? I just don't know. I have yet to see a Gen 2 in the wild, much less hold one.