Enjoy free shipping during the holidays! Shop now and get
Free Value Shipping
on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.
Enjoy Our Extended FREE RETURNS
We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended
Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended
return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later).
We'll even cover the cost of return shipping. Learn more about our
Return Policy.
Please Enable Your Browser's Cookies Functionality
Cookies are not currently enabled in your browser, and due to this the functionality of our site will be severely restricted.
Web browser based cookies allow us to customize our site for you, save items in your cart,
and provide you with a great experience when shopping OpticsPlanet.
Your privacy is important to us, and any personal information you supply to us is kept strictly confidential.
If you cannot enable cookies in your browser, please contact us — we are always here to help!
JavaScript is blocked by AdBlocker or ScriptBlocker
We're sorry - it looks like some elements of OpticsPlanet are being disabled by your AdBlocker.
Unfortunately we are unable to offer our excellent shopping experience without JavaScript.
Please add "opticsplanet.com" and "https://opl.0ps.us/assets-b6e0d4a67bc/" to whitelist,
or disable AdBlocker for this site (please note that we do NOT feature any annoying ads on this website).
Thanks!
Your Browser is Outdated
Unfortunately, we are unable to provide an excellent shopping experience on your browser because it lacks modern functionality needed for us
to provide a fast, secure, and enjoyable experience. If you cannot upgrade your browser or use an alternative device to visit us,
please contact us at +1-800-504-5897 and we'll be happy to assist you over the phone!
Mean Arms 9mm Ejectored EndoMag - 3 Pack 2100769 Color: Black, Fabric/Material: Polymer, 37% Off, Coupon Available w/ Free S&H
It should work with any standard 9mm bolt carrier group. Please email us at techsales@opticsplanet.com with 9mm bolt carrier groups you have attempted to use with these magazines as Mean Arms specifically states:
"The new EndoMag is a magazine insert that converts your Gen 2 or Gen 3 5.56/.223 PMAG® housing into a 9mm magazine to use with a standard AR lower and 9mm upper of your choosing with a Glock or Colt variant 9mm BCG"
Good,but it needs work.I love the idea to use a 5.56 mag.Throw in some new guts,and you are shooting 9mm. The problem that I have with it.The ejector is made of plastic like the rest of it.What it needs is a metal ejector.I have had problems with the...
Read More...
Even though BCA has reviews that this will work with their 9mm upper assembly. Bear Creek Arsenal redesigned their Bolt Carrier Group which does not work with these Endomags. They kept the same part number and reviews but like I said, changed their...
Read More...
This 9mm PCC conversion by CMMG along with many of their variety of AR Caliber conversions, this may seem like the easiest route.
After doing so much research on Blowback9.com, I decided to go with a FM9 Upper Receiver and a standard AR Lower. Let m...
Read More...
It worked perfectly. I changed my ar9 lower for a ar15 lower so I could have last round bolt hold back feature that my ar9 lower didn't have. Now it's **** with all the features of a ar15
Bought 4 of these for an AR pistol build. One would not lock the bolt open. I called the Mean Arms customer service and they advised a fix that had the bolt hold open functioning properly in less that 5 min. They even offered to replace the item if t...
Read More...
If you read the instructions and install this correctly it runs flawless. Great product from a great company with awesome customer service. I have ran about 300 rounds through two mags and it has not let me down yet.
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers. See promotion details.
Color: Black Gun Model: AR-15 Caliber: 5.56x45mm NATO , 9mm Luger Magazine Capacity: 10 RoundCondition: New Additional Features: Ejectored
Product Info for Mean Arms 9mm Ejectored EndoMag - 3 Pack
We are excited and pleased to introduce the MEAN EndoMag. This product is a magazine insert that converts your Gen 2 or Gen 3 5.56/.223 PMAG® housing into a 9mm magazine to use with a standard AR lower and 9mm upper of your choosing with a Glock or Colt variant 9mm BCG.
Specifications for Mean Arms 9mm Ejectored EndoMag - 3 Pack:
Manufacturer:
Mean Arms
Color:
Black
Fabric/Material:
Polymer
Gun Make:
AR Platform
Gun Model:
AR-15
Caliber:
5.56x45mm NATO, 9mm Luger
Magazine Capacity:
10 Round
Magazine Included:
No
Condition:
New
Additional Features:
Ejectored
Quantity:
3 Pack
Features of Mean Arms 9mm Ejectored EndoMag - 3 Pack:
Quickly and easily change calibers from .223/5.56 to a caliber associated with the EndoMag in a Magpul 30-round 5.56x45 PMAGs (Gen 2 and 3)
Ejectored
Functions as a magazine!
No magwell adapter needed!
Keep your standard 5.56 Multi Caliber lower receiver!
Comes fully assembled.
No tools required.
Keep all your PMAGs in use, no need to buy additional or specific 9mm magazines.
Keep your muscle-memory reload-training the same between calibers
Same magazine, same draw, same feel.
No learning curve when reloading because it is the same magazine you already use!
Use most of your PMAG accessories: i.e. mag pouches, storage racks, decals, caliber indicators, etc.
Not a picky eater. Shoots all 9mm munitions. Hollow points included.
Package Contents:
Mean Arms 9mm Ejectored EndoMag - 3 Pack
Mean Arms 9mm Ejectored EndoMag - 3 Pack Orderable Models
Your Browser is Outdated
