AR-15 PMAG Gen M3 Magazine Coupler – Double Stack – 10/30 Round Compatible
PLEASE DOUBLE CHECK DETAILS AND FITMENT BEFORE PURCHASE.
This Cross Armory Magazine Coupler is made for Magpul Gen M3 PMAG AR-15 magazines and connects two compatible magazines base-to-base in a vertical double-stack setup. It can be used with two 10-round PMAGs for restricted-state style setups or two 30-round PMAGs where legal.
The coupler is CNC-machined from lightweight 7075-T6 billet aircraft aluminum and uses a patented locking-key design to hold the magazines together. It gives you a faster reload option without taping mags together like a basement goblin with electrical tape and hope.
Fitment
- Fits Magpul PMAG Gen M3 AR-15/M4 magazines.
- Works with AR-15 10-round Magpul PMAGs.
- Works with AR-15 30-round Magpul PMAGs where legal.
- Designed for AR-15/M4 PMAG magazine setups.
- When two 10-round PMAGs are coupled, Cross Armory states the total size is similar to a standard 30-round magazine.
Does NOT fit
- Magazines are not included.
- Do not assume compatibility with non-Magpul magazines.
- Do not assume compatibility with non-Gen M3 PMAGs unless specifically verified.
- Do not use with restricted magazines or magazine configurations that violate your state or local laws.
What it does
This coupler locks two compatible PMAGs together so one magazine can be loaded into the rifle while the second rides attached underneath. During a reload, the magazine stack can be flipped and reinserted, keeping the next magazine immediately available.
Why it’s worth it
For compliant 10-round PMAG setups, this gives you a cleaner way to carry two magazines together without increasing the internal capacity of either magazine. In unrestricted states, it can also pair two 30-round PMAGs for a 60-round carried setup. It is simple, metal, compact, and a lot cleaner than duct-tape engineering.
Specs
- Brand: Cross Armory
- Part Type: Magazine coupler
- Platform: AR-15/M4
- Magazine Fitment: Magpul PMAG Gen M3 AR-15 magazines
- Compatible Magazine Capacities: 10-round PMAGs and 30-round PMAGs where legal
- Material: CNC-machined 7075-T6 billet aircraft aluminum
- Construction: All-metal coupler body
- Design: Patented locking-key system
- Secondary Use: Can act as a weighted base plate to help magazines drop free faster
What’s included
- 1 Cross Armory Magazine Coupler for Magpul Gen M3 PMAG AR-15 magazines
- Magazines are not included
Tools needed
Basic hand installation only. Follow Cross Armory’s installation method and confirm the coupler is locked securely before use.
Install notes
Install only on compatible Magpul Gen M3 AR-15 PMAGs. Confirm both magazines are seated securely in the coupler before loading or using them. After installation, test magazine insertion, magazine release, reload movement, and clearance with your rifle setup.
Verify before you buy
Verify your magazines are Magpul Gen M3 AR-15 PMAGs before ordering. Also verify your local magazine laws before purchase. This product connects magazines together, and legal treatment can vary by state, capacity, configuration, and use.
Buyer is responsible for compliance with all local/state laws regarding magazine capacity.
⚠️ LEGAL DISCLAIMER
Don’t be that guy ordering 30-round mags in ban states. We don’t ship to restricted zones unless you’ve got the paperwork and Odin’s blessing. You’ve been warned.
Note on Shipping
⚠️ High-capacity magazine laws suck, and unfortunately this item cannot ship to CA, CO, CT, DC, HI, IL, MA, MD, NJ, NY, RI, WA, VT, or other restricted states. Adult signature required where applicable.
⚠ Trademark & Compatibility Disclaimer
IronKells Armory LLC is not affiliated with, endorsed by, or sponsored by any manufacturer mentioned. All trademarks are the property of their respective owners and are used only to identify compatibility or fitment.
⚠ Install & Compatibility Disclaimer
Installation should be performed by a qualified armorer or gunsmith. Improper installation, modification, or use may affect firearm safety and reliability. Buyer is responsible for verifying compatibility, performing proper function testing, and ensuring safe operation.