Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

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 FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart

Q&A for FAB Defense OMC Ultimag 10R Dual Magazine Coupler Kit — 11 Questions & 11 Answers

Name FAB Defense OMC Ultimag 10R Dual Magazine Coupler Kit (4)
As Low As $18.49 Save Up to 66%
View Product
Please keep questions related to the product! If you have questions regarding availability, pricing, or shipping options for this item, please contact our customer service team.
Need an answer right now?
Contact us!
Continue As a Guest
Saving...
Sign In or Create an Account (optional)
Why use an OpticsPlanet.com account for my questions and answers?

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show
Sort by
Filter by
Q
Joey, guest, from CA, United States, asked on June 07, 2022

Will these magazines fit the S&P Sport II AR15 style rifle (chambered in NATO 5.56)?

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on June 20, 2022

The FAB Defense OMC Ultimag 10R Dual Magazine Coupler Kit is designed to work with Mil-Spec AR15's. So it will work with the M&P Sport II.

1 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Q
Cranky, guest, from CA, United States, asked on May 03, 2022

Will this work on an ar15 that is chambered in 7.62x39.. AR-47

Expert Answer
A
Answered by Hunter, Gear Expert, from OH, United States, on May 11, 2022

The FAB Defense OMC Ultimag 10R Dual Magazine Coupler Kit will not work with 7.62x39. The 7.62x39 round can be squeezed into a 5.56 magazine but it will not hold the same about of rounds and majority of the time will not feed reliably.

2 of 2 found the following answer helpful.
Was it helpful to you? Yes | No
Q
Dmabee, member, from NY, United States, asked on May 06, 2021

will it hold 6.5 Grendel?

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 11, 2021

No, this will not properly function with the 6.5 Grendel.

0 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Expert Answer
A
Answered by Brandon B, Gear Expert, from IL, United States, on August 17, 2021

FAB Defense Opposite Magazine Coupler for Two comes with the following:

1x OMC Magazine Coupler
2x Ultimag 10R Magazine

1 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Q
Fred Schoebel, member, from AZ, United States, asked on February 16, 2021

Will the Cupler kit work on other AR 15 magazines

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 11, 2021

No, this is made to work with FAB Defense 10R magazines.

Was it helpful to you? Yes | No
Q
Lou, guest, from CA, United States, asked on January 29, 2021

Is this CA compliant or legal in CA?

Expert Answer
A
Answered by Brandon B, Gear Expert, from IL, United States, on August 17, 2021

Please contact us at rm@opticsplanet.com for more information on this question.

Was it helpful to you? Yes | No
Q
steve, guest, from NY, United States, asked on January 27, 2021

will the coupler work with magpul gen3 10 round 223 mags and is just the coupler available

Expert Answer
A
Answered by Tom B, Gear Expert, from IL, United States, on September 11, 2021

No, this is made for the FAB Defense Ultimag 10R.

Was it helpful to you? Yes | No
Q
Konstantin, guest, from GA, United States, asked on October 07, 2020

Is it good for 300 aac

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on December 15, 2020

Yes, these magazines are meant specifically for AR-15's chambered in .223/5.56/.300 Blackout.

1 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Q
jacky, member, from CA, United States, asked on July 15, 2020

It is can use for AR15 5.56X4.5?

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on December 15, 2020

Yes, these magazines are meant specifically for AR-15's chambered in .223/5.56/.300 Blackout.

1 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Q
Mike42, guest, from CA, United States, asked on May 26, 2020

Is this for 5.56

Expert Answer
A
Answered by Armando R., Gear Expert, from IL, United States, on December 15, 2020

Yes, these magazines are meant specifically for AR-15's chambered in .223/5.56/.300 Blackout.

1 of 1 found the following answer helpful.
Was it helpful to you? Yes | No
Last updated 2025-11-12 UTC.