Help mating upper and lower...

Are you having problems with a rifle or handgun? Having problems with a magazine? This is the place to post for help or to help others. If you fixed that nagging problem with your AR-15, this is the place to post how you did it.
Toy00taco
ArizonaShooting.org Bronze Supporter
ArizonaShooting.org Bronze Supporter
Posts: 52
Joined: June 2nd, 2018, 6:02 pm
Reputation: 0
Location: Surprise

Re: Help mating upper and lower...

#16

Post by Toy00taco »

Did you ever figure this out? Did Fostech ever get back you you? If you still haven’t figured it out post the video you sent them or maybe a pic of the setup could help us determine what the issue is.


Toy00taco
ArizonaShooting.org Bronze Supporter
ArizonaShooting.org Bronze Supporter
Posts: 52
Joined: June 2nd, 2018, 6:02 pm
Reputation: 0
Location: Surprise

Re: Help mating upper and lower...

#17

Post by Toy00taco »

Any update on this? If you have found the fix it might come in handy to have it posted on the forum in case someone else has a similar issue down the road.
User avatar
Lwstarks
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 151
Joined: May 25th, 2018, 5:30 pm
Reputation: 5
Location: Mesa

Re: Help mating upper and lower...

#18

Post by Lwstarks »

I just sent it off to fostech yesterday. It is a wait and see now.
User avatar
mock0013
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 137
Joined: November 16th, 2018, 9:19 pm
Reputation: 3
Location: Scottsdale

Re: Help mating upper and lower...

#19

Post by mock0013 »

I think I had to remove the front and rear pin and work mine to get it together.. I haven't pulled it apart in ages. guess I need to do some cleaning.
Toy00taco
ArizonaShooting.org Bronze Supporter
ArizonaShooting.org Bronze Supporter
Posts: 52
Joined: June 2nd, 2018, 6:02 pm
Reputation: 0
Location: Surprise

Re: Help mating upper and lower...

#20

Post by Toy00taco »

Thanks for the update, too bad you had to send it back and it wasn’t just a simple fix. Keep us posted with how Fostech resolves this for you.
User avatar
Lwstarks
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 151
Joined: May 25th, 2018, 5:30 pm
Reputation: 5
Location: Mesa

Re: Help mating upper and lower...

#21

Post by Lwstarks »

I found out that the buffer tube was in one turn too many. After it was backed off, guess what, closed like it should. In fact i can slap any upper to it now. I took it to casa grande and worked like it should with both the 9mm and 5.56 uppers.
User avatar
792mauser
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 565
Joined: May 17th, 2018, 6:15 am
Reputation: 14

Re: Help mating upper and lower...

#22

Post by 792mauser »

Good to hear that it was a simple and easily fixed problem.
User avatar
muta4warrior
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 231
Joined: May 19th, 2018, 9:25 am
Reputation: 11
Location: East Mesa

Re: Help mating upper and lower...

#23

Post by muta4warrior »

Lwstarks wrote: May 13th, 2020, 1:34 pm I found out that the buffer tube was in one turn too many. After it was backed off, guess what, closed like it should. In fact i can slap any upper to it now. I took it to casa grande and worked like it should with both the 9mm and 5.56 uppers.
I called it back in March... :mrgreen:
User avatar
baja
ArizonaShooting.org Member
ArizonaShooting.org Member
Posts: 812
Joined: June 25th, 2018, 10:18 am
Reputation: 12
Location: Mesa

Re: Help mating upper and lower...

#24

Post by baja »

^ Yup, you did. Good Job.
Post Reply
cron