AR pistol with fixed Mag? (In mass )

[jayhitek]

i started using a H2 in all my AR's. Had some weird problems with cycling before that.. Heavier buffer and shorter spring eliminated a lot of the issues.

Might help in your case.. Also might not. But maybe you'll get lucky.
I also have some old mags that will not work well in one of my guns. So I have them labeled to not use them in certain guns.
Aren't AR's awesome???

 

[joe1231913]

Question for the JC Arms lower folks. . . .

I have only shot mine once. But I was futzing with it last night as it has a red-dot I wanted to fiddle with on it.

There is a S-ton of drag on the BCG. I pulled another upper from another gun and dropped it on the fixed lower - same (although less so) problem.

The issue is so bad with the pistol upper that I can get the bolt to "stick" 1/2 open.

Thoughts on a remedy?? Call JC and bring it all in? Simple fix? Is there something wonky with the fixed mag or the bolt release (which doesn't feel quite right)?

Looking to see if I can remedy this BEFORE calling JC.

Feel free to call and bring it in, I will do what I can to remedy it.

 

[Dennis in MA]

I appreciate it, Joe. I swapped buffer/spring from another AR. It's grams heavier but it seems to be a lot smoother and won't hang up. Lemme get it to the range one more time and see how she runs.

 

[PappyM3]

i started using a H2 in all my AR's. Had some weird problems with cycling before that.. Heavier buffer and shorter spring eliminated a lot of the issues

Many AR barrels barrels/uppers are over-gassed from the factory. That generally makes it able to shoot a wider variety of rounds. Heavy buffers help tame it a little.

It sounds like your problem is something other than the buffer being a standard carbine buffer/spring. It could be the stock buffer/spring binding in the tube, or the BCG binding somewhere and the new buffer/spring are strong enough to push the BCG past the binding spot.

Hmm

 

[ricca73]

Very late to this thread . But want to jump on board with a build . Can I use any stripped lower that I have purchased in the past that is virgin and never been registered . Purchased on bill of sales only? Also where are you guys installing the blind pin for the mag ? Orders the Malock and loader setup already .
thanks

 

[DosesR1]

Very late to this thread . But want to jump on board with a build . Can I use any stripped lower that I have purchased in the past that is virgin and never been registered . Purchased on bill of sales only? Also where are you guys installing the blind pin for the mag ? Orders the Malock and loader setup already .
thanks

From my understanding the lower has to be manufactured as a FIXED MAG to be 100 percent on the safe side

 

[DosesR1]

Here’s mine it’s fun but I think I’m going with a longer barrel

 

[ricca73]

View attachment 310077
Here’s mine it’s fun but I think I’m going with a longer barrel

View attachment 310077
Here’s mine it’s fun but I think I’m going with a longer barrel

Well that’s not what I was hoping to hear! I was thinking if they sold the mass lock then why couldn’t you just make your own with a 10 round mag pinned? Also the pistol looks great! Love it

 

[DJBrad]

Very late to this thread . But want to jump on board with a build . Can I use any stripped lower that I have purchased in the past that is virgin and never been registered . Purchased on bill of sales only? Also where are you guys installing the blind pin for the mag ? Orders the Malock and loader setup already .
thanks

DosesR1 is correct. Even though you have an “old” lower you are making a new build. Not a big deal though as fixed mags are pretty easy to reload. Easy to service with a pmag bottom plate. Easy to load either with a ejection port loader or top loading using extended takedown pins. Set screw for the mag can go right beneath the bolt release hammer which holds the last round open.

 

[ricca73]

DosesR1 is correct. Even though you have an “old” lower you are making a new build. Not a big deal though as fixed mags are pretty easy to reload. Easy to service with a pmag bottom plate. Easy to load either with a ejection port loader or top loading using extended takedown pins. Set screw for the mag can go right beneath the bolt release hammer which holds the last round open.

So it definitely has to be a manufactured fixed 10 mag lower? Correct

 

[DJBrad]

So it definitely has to be a manufactured fixed 10 mag lower? Correct

Yes

 

[ricca73]

Yes

Does Anyone know where they are readily available? Would like to grab one this weekend if they’re around

 

[DJBrad]

Does Anyone know where they are readily available? Would like to grab one this weekend if they’re around

What do you want to grab? A fixed mag lower?

 

[ricca73]

What do you want to grab? A fixed mag lower?

Yes it fixed mag lower.
I purchased the malock and side loaders, thinking I could use the Malock and a retaining pin to make my own 10round fixed lower ..but guess I can’t do that .

 

[pupchow]

If I'm buying an off-the-shelf fixed mag setup, I'm talking to these guys:

Fixed Mag AR Assault Weapon Charge

I am posting this as the manufacturer of these firearms, we can finally put this topic to rest.... Posted on the facebook group, Guns of Mass : Log In or Sign Up to View Today we claimed victory in Dedham District Court. Not too long ago, an individual was charged with an Assault Weapons...

www.northeastshooters.com

 

[ricca73]

If I'm buying an off-the-shelf fixed mag setup, I'm talking to these guys:

Fixed Mag AR Assault Weapon Charge

I am posting this as the manufacturer of these firearms, we can finally put this topic to rest.... Posted on the facebook group, Guns of Mass : Log In or Sign Up to View Today we claimed victory in Dedham District Court. Not too long ago, an individual was charged with an Assault Weapons...

www.northeastshooters.com

Thank you very much, I will reach out to them and see if they have any available or when I can get one thank you

 

[DJBrad]

Thank you very much, I will reach out to them and see if they have any available or when I can get one thank you

I got the JCArms one and it’s great. He’s a heck of a guy and provides excellent end user support @joe1231913

 

[DosesR1]

Yes it fixed mag lower.
I purchased the malock and side loaders, thinking I could use the Malock and a retaining pin to make my own 10round fixed lower ..but guess I can’t do that .

JCArms is the way to go! Btw I didn’t like the ma loaders if you can return them do so .... got nothing but the most complex jams
Try the BF-10 loaders waayyyyy better

 

[ricca73]

JCArms is the way to go! Btw I didn’t like the ma lowers if you can return them do so .... got nothing but the most complex jams View attachment 310115
Try the BF-10 loaders waayyyyy better

I will look them up. Thank you !

 

[Behind Enemy Lines]

From my understanding the lower has to be manufactured as a FIXED MAG to be 100 percent on the safe side

And he'd be manufacturing it, no?

 

[DosesR1]

trade my lower for a non fixed mag one

 

[Mountain]

JCArms is the way to go! Btw I didn’t like the ma loaders if you can return them do so .... got nothing but the most complex jams View attachment 310115
Try the BF-10 loaders waayyyyy better

MA loaders are fine. User error? Zero issues for me. YRMV...

 

[DosesR1]

MA loaders are fine. User error? Zero issues for me. YRMV...

1/4 of the time they wouldn’t all load and cause a jam since the bolt is realesed when the load is pulled out ... with the bt-10s I don’t have that issue since the it doesn’t push the bolt back when loading the rounds into the gun

 

[ricca73]

Purchased a Jc Arms fixed lower today .. so I guess my virgin lowers will stay that way.

 

[DosesR1]

Can I put a regular stock on the fixed mag lower if it registered as a pistol or does it have to be a brace ?

 

[CrackPot]

Can I put a regular stock on the fixed mag lower if it registered as a pistol or does it have to be a brace ?

The stock makes it an SBR. Brace for a pistol (or nothing)

 

[DosesR1]

The stock makes it an SBR. Brace for a pistol (or nothing)

Even with a 16inch barrel?

 

[pupchow]

Even with a 16inch barrel?

You're in an AR pistol thread.

 

[jayhitek]

You're in an AR pistol thread.

Hahaha

 

[Mountain]

This thread- one more post away from it.