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Re: cycle problems
Posted: Mon Apr 16, 2012 12:02 pm
by Maryland_Shooter
Taseal wrote:sniiped wrote:So far they want me to try a higher grain bullet. Taking into consideration which gun I have (mk116) I'm thinking I can put a "softer" buffer spring in there or take a standard one and trim it down so it has less resistance. I'm searching around the net and I'm seeing buffer springs for as low as $3. Any one know of a buffer spring that is slightly softer than a standard buffer spring? Any input and help with this is greatly appreciated. Also, would a heavier or lighter buffer be another option? Thanks again.
Honestly, shouldn't it just work? 300 BLK is always advertised as "change the barrel and you're good to go"
if you have to try higher grain bullets, change out buffer springs... It's kind of self trouble shooting which you shouldn't have to do for a $1200 upper don't ya think?
Novel approach. I have a SBR lower, runs great on a 5.56/6.8, but not on the 300 BLK. So I am supposed to do what? Modify it to run the 300 BLK, then have issues with 5.56 and 6.8?
I don't think so.
I'll send $200 to ATF when I have the $ and another lower, but
"Shouldn't it just work?"
Re: cycle problems
Posted: Mon Apr 16, 2012 8:29 pm
by copenhagen
if you have to try higher grain bullets, change out buffer springs... It's kind of self trouble shooting which you shouldn't have to do for a $1200 upper don't ya think?
^^THIS.
Novel approach. I have a SBR lower, runs great on a 5.56/6.8, but not on the 300 BLK. So I am supposed to do what? Modify it to run the 300 BLK, then have issues with 5.56 and 6.8?
I don't think so.
^^It isn't like you are talking about the difference in cycling a .22LR and a 5.56x45mm here. Yes, your lower should run both without issue. . .in my humble opinion. You don't care? Up to you. I would not be satisfied with that.
Re: cycle problems
Posted: Mon Apr 16, 2012 9:57 pm
by Maryland_Shooter
copenhagen wrote:if you have to try higher grain bullets, change out buffer springs... It's kind of self trouble shooting which you shouldn't have to do for a $1200 upper don't ya think?
^^THIS.
Novel approach. I have a SBR lower, runs great on a 5.56/6.8, but not on the 300 BLK. So I am supposed to do what? Modify it to run the 300 BLK, then have issues with 5.56 and 6.8?
I don't think so.
^^It isn't like you are talking about the difference in cycling a .22LR and a 5.56x45mm here. Yes, your lower should run both without issue. . .in my humble opinion. You don't care? Up to you. I would not be satisfied with that.
Agreed!
Re: cycle problems
Posted: Sun Apr 22, 2012 7:31 pm
by Hshredder18
I'm having the same problem with my PWS mk116 300 blackout. I'm shooting unsupressed. Remington 125 grain. I can shoot the first bullet but after that it doesn't grab another. It cycles the spent round out but that's it. Any answers yet. You still having problems. I'm about to call PWS tomorrow and see what's up.
Re: cycle problems
Posted: Sun Apr 22, 2012 11:40 pm
by Maryland_Shooter
Hshredder18 wrote:I'm having the same problem with my PWS mk116 300 blackout. I'm shooting unsupressed. Remington 125 grain. I can shoot the first bullet but after that it doesn't grab another. It cycles the spent round out but that's it. Any answers yet. You still having problems. I'm about to call PWS tomorrow and see what's up.
Under gassed is a guess. Seen this before. Bolt doesn't travel far enough back to pick up the fresh rounds.
Put one in a mag, fire it. Doesn't lock open on the empty mag = under gassed.
Have you tried this test?
Re: cycle problems
Posted: Mon Apr 23, 2012 12:29 am
by Hshredder18
Yeah doesn't lock open. So whats next. Never had anything like this happen. Always bought shit that worked.
Re: cycle problems
Posted: Mon Apr 23, 2012 1:12 am
by Hshredder18
Oh and thanks for responding back.
Re: cycle problems
Posted: Mon Apr 23, 2012 9:39 am
by Maryland_Shooter
Gentlemen, my advice is to send it back to PWS for repair under warranty.
If for some reason they won't honor it, send them it me and I'll fix the damned thing for free, you just pay the postage both ways and say something nice about me at my funeral - even if you have to make it up.
ETA:
Specify the ammo as FPS - supersonic (my guess) or subsonic?
Do you have a suppressor?
Re: cycle problems
Posted: Mon Apr 23, 2012 10:08 am
by AR-300
Hshredder18 wrote:Yeah doesn't lock open. So whats next. Never had anything like this happen. Always bought shit that worked.
check gas tube alignment
Re: cycle problems
Posted: Mon Apr 23, 2012 8:48 pm
by Taseal
Please call PWS, they supposedly have a very very good customer service. they WILL fix it. I'm sure of this...
talk to stacey tomorrow. this needs to be brought to his attention, I've heard 3-4 people so far having problems... someone just posted the same problem on their fb page now.