Description
The ProMag 70-round drum holds more than enough ammunition to keep you shooting without constant magazine swaps during a long session at the range. With 70 rounds of .22 LR capacity, you can focus on accuracy and trigger time instead of spending half the day reloading magazines.
What to Expect from This Drum Design
The smoke-tinted polycarbonate body lets you see exactly how many rounds you've got left without taking the magazine out of the well. The material is durable and impact-resistant, designed to handle regular use without cracking or failing. Inside, you'll find a precision-wound chrome silicon spring (heat-treated for consistency) paired with an injection-molded follower that feeds rounds reliably through the drum's rotation.
Loading and Practical Use
Loading a 70-round drum is a manual process. You'll access the loading mechanism through a cutout on the back, turn the adjusting wheel counterclockwise to lower the follower, insert one round at a time into the feed tower, then release the wheel. It takes patience and a few minutes to load completely, but once it's full you'll have plenty of rounds ready to go. Pay close attention to the loading instructions that come with the magazine to avoid resistance or jams.
Fit can vary depending on your specific 10/22 setup. Most rifles accept this drum without issues, but some users with certain stocks or magazine well configurations have reported tight fits. If yours feels snug, a little handling and time usually breaks it in. The magazine is made in the USA and backed by a lifetime guarantee against manufacturing defects, which gives you peace of mind on your investment.
Key Specifications
- Manufacturer: ProMag
- Model Number: RUG-A30
- UPC: 708279011177
- Caliber: .22 LR
- Capacity: 70 rounds
- Type: Rotary drum magazine
- Firearm Compatibility: Ruger 10/22, 77/22, 96/22, Charger Pistol
- Magazine Body Material: Smoke-tinted polycarbonate
- Magazine Spring: Precision-wound heat-treated chrome silicon
- Follower: Injection-molded polymer
- Feed Lips: Reinforced polymer
- Finish: Smoke gray
- Country of Origin: USA
- Warranty: Lifetime warranty against manufacturing defects
What’s Included
- ProMag RUG-A30 70-round drum magazine
- Loading instructions
Frequently Asked Questions
Will the 70-round drum fit my Ruger 10/22?
Yes, it's designed specifically for Ruger 10/22 rifles, as well as 77/22, 96/22 models, and the Ruger Charger pistol. In most cases it drops right in, though fit can vary slightly depending on your stock or magazine well configuration. If it feels a bit snug at first, handling it a few times usually helps.
How long does it take to load this drum magazine?
Expect 5-10 minutes your first few times, depending on how comfortable you get with the loading mechanism. You'll be turning the adjusting wheel and inserting rounds one at a time into the feed tower. Once you develop a rhythm, it gets faster, but it's not a quick reload like a standard magazine.
What ammunition should I use with this drum?
Standard .22 LR ammunition works fine. Most shooters report good results with CCI, Federal, Remington, and Aguila brands. A few users have mentioned that waxed ammunition can occasionally cause issues, so if you experience feeding problems, try switching to non-waxed rounds.
Is the ProMag drum reliable for regular range use?
ProMag's 10/22 drum has a solid track record among rimfire drums and is engineered for regular range use. That said, drum magazines are mechanically more complex than standard magazines, so they can be pickier than factory magazines in some rifles. Most users report it feeds and functions well once they understand how to load and fit it properly in their specific gun.




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