Description
When you own an RM1C, it's worth having at least one solid backup magazine, and there's no better option than going straight to the source. This is the genuine Rost Martin factory magazine for the RM1C compact pistol, chambered in 9mm and holding 10 rounds. It's made to the same tolerances as what came in the box with your pistol, which means you're getting a confirmed fit, consistent lockup, and reliable feeding without any guesswork.
The body is steel with a corrosion-resistant matte black finish, and the internals are built to work together as a system. The high-visibility polymer follower pairs with a steel spring to keep rounds feeding smoothly and prevent nose-diving, while numbered witness holes along the rear give you a quick visual on how many rounds you have left without dropping the mag. Small detail, but one you appreciate at the range.
The baseplate is a scalloped polymer design that fits flush with the grip of the RM1C, keeping the profile clean and concealable. The scalloping also gives you a grip point to strip the magazine out manually if needed, which is a smarter design than a plain flat base. It's machined to fit snugly with no wobble, which matters for both reliability and confidence.
This mag is a natural fit for RM1C owners who want a dedicated spare for everyday carry, a range backup, or just peace of mind knowing there's a tested, factory-spec magazine ready to go when the primary runs dry. Made in Dallas, TX.
Key Specifications
- Manufacturer: Rost Martin
- Model: RM1C
- MPN: RM10033
- UPC: 860011125853
- Caliber: 9mm Luger
- Capacity: 10 Rounds
- Body Material: Steel
- Finish: Matte Black, Corrosion-Resistant
- Follower: High-Visibility Polymer
- Baseplate: Scalloped Polymer
- Fit: Flush
- Witness Holes: Numbered (2-10), Rear-Facing
- Color: Black
- Weight: 7 oz
- Made In: Dallas, TX
What’s Included
- 1x Rost Martin RM1C 10-Round 9mm Magazine
Frequently Asked Questions
Will this magazine fit the Rost Martin RM1C pistol without any modification?
Yes, this is the factory OEM magazine manufactured by Rost Martin specifically for the RM1C compact pistol. It is machined to exact tolerances for a snug, wobble-free fit right out of the box. No modification or fitting is required.
Does the RM10033 magazine fit flush with the grip of the RM1C?
It does. The 10-round magazine is a flush-fit design, meaning it sits even with the bottom of the grip frame for a clean, concealable profile. The scalloped polymer baseplate makes it easy to strip out manually despite the flush fit.
What is the magazine body made of?
The body is constructed from steel with a matte black corrosion-resistant finish. Internally, it uses a steel spring and a high-visibility polymer follower designed to work together for reliable, consistent feeding.
Are there witness holes so I can check my round count?
Yes, the magazine features numbered witness holes along the rear from 2 through 10, so you can get a fast visual on remaining rounds without removing the magazine from the gun.
Is this magazine compatible with the RM1C subcompact or other Rost Martin models?
This magazine is designed and specified for the Rost Martin RM1C compact pistol only. Rost Martin also makes the RM1S subcompact, which uses a different magazine. Always verify compatibility with your specific model before purchasing.
Can I use this magazine for everyday carry, or is it mainly a range spare?
It works well for both. The flush-fit design keeps the pistol's carry profile intact, and the steel construction and corrosion-resistant finish mean it can handle being carried daily without issue. Having at least one backup mag on hand is a good habit whether you're at the range or carrying daily.







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