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I just got my hands on the Rost Martin R1MC, finally out of jail and straight to the range at Sunnyvale Rod & Gun club. The facility is really nice and well maintained. I had a colleague handle the RM1C as well. This is the Gray version that recently came on roster and came with 2 10 round CA compliant magazines. In the package also comes with a different back strap, a lock, and a RMR plate that's included!
RM1C Review – First Impressions & Initial Testing
Ammo Tested
I ran the RM1C through four types of ammo for the initial test:
Factory 9mm
• 115gr Winchester White Box FMJ
• 115gr PPU FMJ
Reloads
• 124gr Blue Bullets Truncated Cone
• 124gr JHP V1 Precision Delta
Reliability
I purposely did not clean or lubricate the RM1C to see if it would function right out of the box—and it ran flawlessly with zero malfunctions or jams. I fired 100 rounds, alternating between different ammo types, including truncated cone JHPs, which can sometimes cause feeding issues.
These were loaded to 130-133 Power Factor, which is about 8% less than factory ammo (typically 140-146 PF). Despite the lower power factor, everything cycled smoothly.
Recoil Impulse
The 124gr rounds felt noticeably softer in recoil than the 115gr, which had more snap. While I wasn’t focused on accuracy for this test, I did notice that the grip texture felt a bit slippery—likely due to the combination of cold, wet weather and the factory finish.
I’ll probably add some grip tape for extra friction, as I had to readjust my grip occasionally, especially with the 115gr rounds. It wasn’t uncontrollable, but it did feel like the gun was shifting slightly in my hands.
Accuracy
I shot at ~27 yards using iron sights, which isn’t my usual setup since all my firearms are optic-equipped. I have a Holosun 507 ready to mount, so once I get it zeroed, I’ll do a more in-depth accuracy test.
For this session, I was mainly testing transitions and trigger feel, so I wasn’t focusing on precision shots. That said, the RM1C seemed to group well for an out-of-the-box compact pistol.
Trigger
The RM1C’s trigger is surprisingly good for an entry-level pistol. Compared to a stock Sig P320 or Glock trigger, it’s much better and feels closer to a Canik trigger.
• Pull weight: ~5 lbs
• Flat face with a small lip
• Minimal take-up before a distinct wall
• Short break with a tactile reset
There’s a slight “springy” feel in the trigger—hard to describe, but noticeable. Not a dealbreaker, but something worth mentioning. RM offers a performance trigger upgrade, which might make the break even cleaner.
Overall Impressions
The RM1C punches above its weight class. It’s light, reliable, and feature-packed—front serrations, an RMR-cut slide, and solid ergonomics make it a strong contender in its category.
No ammo issues – ran flawlessly out of the box
Recoil is manageable, though 124gr rounds feel better in compacts
Ambidextrous controls by default – no need to swap the mag release
Good trigger – short reset, crisp break
A few minor cons:
The grip texture is both a pro and a con—comfortable for AIWB carry, but can feel a bit slick when shooting. Grip tape should fix this.
The grip length is slightly short for me, causing my palm to hit during mag changes—not a dealbreaker but worth noting.
Final Thoughts
Would I carry this as a CCW pistol? Absolutely. It’s lightweight, reliable, and fun to shoot. I’ll be adding a Holosun 507 soon and will follow up with an accuracy-focused review once it’s zeroed.
Stay tuned for Part 2!
TL;DR – Quick Summary
• Ran flawlessly with factory and reloads
• Reliable out of the box (no cleaning/lubing needed)
• Recoil is snappier with 115gr, smoother with 124gr
• Good trigger (better than stock Glock/Sig P320)
• Grip texture is comfortable but could use more friction
• Short grip affects mag changes slightly
• RMR-cut slide is a great feature
Questions? Thoughts? Drop them below! 
RM1C Review – First Impressions & Initial Testing
Ammo Tested
I ran the RM1C through four types of ammo for the initial test:
Factory 9mm• 115gr Winchester White Box FMJ
• 115gr PPU FMJ
Reloads• 124gr Blue Bullets Truncated Cone
• 124gr JHP V1 Precision Delta
Reliability
I purposely did not clean or lubricate the RM1C to see if it would function right out of the box—and it ran flawlessly with zero malfunctions or jams. I fired 100 rounds, alternating between different ammo types, including truncated cone JHPs, which can sometimes cause feeding issues.
These were loaded to 130-133 Power Factor, which is about 8% less than factory ammo (typically 140-146 PF). Despite the lower power factor, everything cycled smoothly.
Recoil Impulse
The 124gr rounds felt noticeably softer in recoil than the 115gr, which had more snap. While I wasn’t focused on accuracy for this test, I did notice that the grip texture felt a bit slippery—likely due to the combination of cold, wet weather and the factory finish.
I’ll probably add some grip tape for extra friction, as I had to readjust my grip occasionally, especially with the 115gr rounds. It wasn’t uncontrollable, but it did feel like the gun was shifting slightly in my hands.
Accuracy
I shot at ~27 yards using iron sights, which isn’t my usual setup since all my firearms are optic-equipped. I have a Holosun 507 ready to mount, so once I get it zeroed, I’ll do a more in-depth accuracy test.
For this session, I was mainly testing transitions and trigger feel, so I wasn’t focusing on precision shots. That said, the RM1C seemed to group well for an out-of-the-box compact pistol.
Trigger
The RM1C’s trigger is surprisingly good for an entry-level pistol. Compared to a stock Sig P320 or Glock trigger, it’s much better and feels closer to a Canik trigger.
• Pull weight: ~5 lbs
• Flat face with a small lip
• Minimal take-up before a distinct wall
• Short break with a tactile reset
There’s a slight “springy” feel in the trigger—hard to describe, but noticeable. Not a dealbreaker, but something worth mentioning. RM offers a performance trigger upgrade, which might make the break even cleaner.
Overall Impressions
The RM1C punches above its weight class. It’s light, reliable, and feature-packed—front serrations, an RMR-cut slide, and solid ergonomics make it a strong contender in its category.
No ammo issues – ran flawlessly out of the box Recoil is manageable, though 124gr rounds feel better in compacts Ambidextrous controls by default – no need to swap the mag release Good trigger – short reset, crisp breakA few minor cons:
The grip texture is both a pro and a con—comfortable for AIWB carry, but can feel a bit slick when shooting. Grip tape should fix this. The grip length is slightly short for me, causing my palm to hit during mag changes—not a dealbreaker but worth noting.Final Thoughts
Would I carry this as a CCW pistol? Absolutely. It’s lightweight, reliable, and fun to shoot. I’ll be adding a Holosun 507 soon and will follow up with an accuracy-focused review once it’s zeroed.
Stay tuned for Part 2!
TL;DR – Quick Summary
• Ran flawlessly with factory and reloads
• Reliable out of the box (no cleaning/lubing needed)
• Recoil is snappier with 115gr, smoother with 124gr
• Good trigger (better than stock Glock/Sig P320)
• Grip texture is comfortable but could use more friction
• Short grip affects mag changes slightly
• RMR-cut slide is a great feature
Questions? Thoughts? Drop them below! 