Go Back   Maryland Shooters > The Marketplace > Wanted to Buy
Don't Have An Account? Register Here

Join MD Shooters
Reply
 
Thread Tools Display Modes
Old July 17th, 2021, 03:39 PM #1
Raypa Raypa is offline
Junior Member
 
Join Date: Jul 2020
Posts: 20
Raypa Raypa is offline
Junior Member
 
Join Date: Jul 2020
Posts: 20
300 blackout magazines for AR15

Looking for a couple 300blk magazines for an AR15 I'm having some feeding issues using regular multical magazines and would like to try specific 300blk.Please let me know if have or know where to get them locally I'm from PG thanks.
Raypa is offline   Reply With Quote
Old July 17th, 2021, 04:12 PM #2
outrider58's Avatar
outrider58 outrider58 is offline
My pronouns? IT of course
 
Join Date: Jul 2014
Posts: 33,333
outrider58 outrider58 is offline
My pronouns? IT of course
outrider58's Avatar
 
Join Date: Jul 2014
Posts: 33,333
Quote:
Originally Posted by Raypa View Post
Looking for a couple 300blk magazines for an AR15 I'm having some feeding issues using regular multical magazines and would like to try specific 300blk.Please let me know if have or know where to get them locally I'm from PG thanks.
You'll have to go out of state for 30 rounders. Magpul makes one. I don't know why. I've shot thousands of rounds through standard USGI as well as Magpul mags. Never a problem. Could it be you might have a feed ramp problem?
__________________
Any comments made by me are made with the intent to spur discussion only.
Proceed on your own accord...
outrider58 is offline   Reply With Quote
Old July 17th, 2021, 04:16 PM #3
omegared24 omegared24 is online now
Senior Member
 
Join Date: Dec 2011
Location: Ijamsville, MD
Posts: 3,916
omegared24 omegared24 is online now
Senior Member
 
Join Date: Dec 2011
Location: Ijamsville, MD
Posts: 3,916
Quote:
Originally Posted by outrider58 View Post
You'll have to go out of state for 30 rounders. Magpul makes one. I don't know why. I've shot thousands of rounds through standard USGI as well as Magpul mags. Never a problem. Could it be you might have a feed ramp problem?
Exactly. Shouldn't have any issues with standard magazines. That's the real advantage of running 300blk.

If the OP can post pics of his feedramps we may be sble to see what's going on.
omegared24 is online now   Reply With Quote
Old July 17th, 2021, 04:55 PM #4
John from MD's Avatar
John from MD John from MD is offline
American Patriot
 
Join Date: May 2005
Location: USSR Maryland
Posts: 13,125
John from MD John from MD is offline
American Patriot
John from MD's Avatar
 
Join Date: May 2005
Location: USSR Maryland
Posts: 13,125
Lancer makes 10 and 20 round mags for 300 Blackout. They have metal feed lips and are very reliable.
__________________
John
Vietnam '72 - '73

"A veteran is someone who, at one point in his life, wrote a blank check made payable to the United States of America for an amount of up to and including my life. That is honor, and there are way too many people in this country who no longer understand it."
(credit to a USAF pilot)

For those who gave all.
https://www.youtube.com/watch?v=UUZHTE1jMXg


Proud Patriot Picket
John from MD is offline   Reply With Quote
Old July 18th, 2021, 01:36 AM #5
GBear GBear is offline
Junior Member
 
Join Date: Mar 2021
Location: Baltimore
Posts: 43
GBear GBear is offline
Junior Member
 
Join Date: Mar 2021
Location: Baltimore
Posts: 43
Quote:
Originally Posted by John from MD View Post
Lancer makes 10 and 20 round mags for 300 Blackout. They have metal feed lips and are very reliable.
I second Lancer. I have their 30 and 20 round mags. No problems at all. I order online, drive to VA to do a store pick-up, and bring them back.
GBear is offline   Reply With Quote
Old July 18th, 2021, 07:05 AM #6
outrider58's Avatar
outrider58 outrider58 is offline
My pronouns? IT of course
 
Join Date: Jul 2014
Posts: 33,333
outrider58 outrider58 is offline
My pronouns? IT of course
outrider58's Avatar
 
Join Date: Jul 2014
Posts: 33,333
I'm sticking by my original post.

If mags fall out of spec, this is why we number them. If the same one continually fails, we either reset the feed lips or we trash them(depending on the type of mag).

I'd be interested to know what kind of mags the OP is using.

Just for general knowledge...

https://policeandsecuritynews.com/20...d-maintenance/

Quote:
The US Army at Picatinny Arsenal in New Jersey has developed and patented a go/no-go feed lip gauge which allows anyone to quickly and accurately check for the correct maximum and minimum clearance tolerances of a magazineís feed lips. The specs for a magazine feed lipís clearance are: Go 454″; No-go 476″. Trying to gauge that visually with any degree of accuracy without a tool is difficult, at best.
__________________
Any comments made by me are made with the intent to spur discussion only.
Proceed on your own accord...
outrider58 is offline   Reply With Quote
Old July 18th, 2021, 11:19 AM #7
omegared24 omegared24 is online now
Senior Member
 
Join Date: Dec 2011
Location: Ijamsville, MD
Posts: 3,916
omegared24 omegared24 is online now
Senior Member
 
Join Date: Dec 2011
Location: Ijamsville, MD
Posts: 3,916
Quote:
Originally Posted by outrider58 View Post
I'm sticking by my original post.

If mags fall out of spec, this is why we number them. If the same one continually fails, we either reset the feed lips or we trash them(depending on the type of mag).

I'd be interested to know what kind of mags the OP is using.

Just for general knowledge...

https://policeandsecuritynews.com/20...d-maintenance/
I agree.

In my opinion, one of the advantages of plastic is when it's done...it's done. They go in the trash.
omegared24 is online now   Reply With Quote
Old July 18th, 2021, 12:12 PM #8
C&RTactical's Avatar
C&RTactical C&RTactical is offline
Member
 
Join Date: Jul 2013
Posts: 376
C&RTactical C&RTactical is offline
Member
C&RTactical's Avatar
 
Join Date: Jul 2013
Posts: 376
Magpul designed a mag specifically for .300 BLK a while ago. They have a 30 round mag with a 20 round on the way.

https://magpul.com/firearm-accessori...obal_color=118
C&RTactical is offline   Reply With Quote
Old July 18th, 2021, 12:18 PM #9
smokey0118's Avatar
smokey0118 smokey0118 is offline
2A TEACHER
 
Join Date: Jan 2008
Posts: 26,557
Images: 33
smokey0118 smokey0118 is offline
2A TEACHER
smokey0118's Avatar
 
Join Date: Jan 2008
Posts: 26,557
Images: 33
I've got 30 rnd Lancer and magpul mags specifically made for 300blk. They seem to work well. Troy battlemags seem to work well too. In all 3 cases, the ridges inside the mag towards the front are radiused in the rear and slightly more forward than ridges on standard pmags. Depending on bullet length and design, standard pmags can put pressure on the nose of the bullet where the alignment ridges inside contact the bullets.

If you want to use existing mags, try with different loads. Something lighter weight(shorter) will likely not contact the alignment ridges as much as something like a 220 gr subsonic load.

You may also have some other issues that are gas or buffer related to think about if blk specific mags and other loads don't fix it.
__________________
"It's hard not to be a menace to society, when half the population is happy on their knees"

parler: 2ateacher
gab: 2ateacher
smokey0118 is offline   Reply With Quote
Old July 18th, 2021, 12:23 PM #10
smokey0118's Avatar
smokey0118 smokey0118 is offline
2A TEACHER
 
Join Date: Jan 2008
Posts: 26,557
Images: 33
smokey0118 smokey0118 is offline
2A TEACHER
smokey0118's Avatar
 
Join Date: Jan 2008
Posts: 26,557
Images: 33
As a sidenote, you may want to grab some of these if you get 300 blk pmags or lancers...
https://smile.amazon.com/dp/B084M73C...ing=UTF8&psc=1
The blk mags ARE designed to be different externally, but I still add these to reduce the chance of mixing up my 5.56 mags and 300 blk.
__________________
"It's hard not to be a menace to society, when half the population is happy on their knees"

parler: 2ateacher
gab: 2ateacher
smokey0118 is offline   Reply With Quote
Reply

  Home Page > Forum List > The Marketplace > Wanted to Buy


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:03 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
© 2021, Congregate Media, LP Privacy Policy Terms of Service