Rost Martin RM1F 9mm Luger 4.5″ Black
About this product
The Rost Martin RM1F 9mm Luger 4.5″ Black is a full-size optics-ready pistol engineered for duty, range, and carry applications with ambidextrous controls and match-grade barrel performance. Built on Rost Martin's proven RM1 platform, this model incorporates direct RMR mounting capability and signature grip texturing for immediate deployment readiness. At $439, it positions itself as a serious contender in the sub-$500 full-size 9mm market.
What is the Rost Martin RM1F used for?
The RM1F serves as a do-everything full-size 9mm platform suitable for duty carry, competition, and trained civilian defensive use. Its 4.5-inch hammer-forged barrel delivers consistent accuracy out to 25 yards, while the optics-ready slide accepts popular red dots like Trijicon RMR and Holosun 507C. The ambidextrous controls and aggressive grip texturing maintain function during rapid strings of fire or adverse conditions.
How does the Rost Martin RM1F compare to the Stevens 334 Rifle?
The RM1F pistol offers immediate defensive capability at 25 yards versus the Stevens 334 Rifle's 200+ yard precision role in .308 Win or .243 Win. While the Stevens 334 (see specs here) provides superior long-range accuracy with its 20-inch barrel, the RM1F dominates close-quarters scenarios with faster target acquisition and higher ammunition capacity—17+1 rounds versus the rifle's 4-round internal magazine.
What does it weigh and what are the dimensions?
The RM1F weighs 32 ounces unloaded and measures 8.2 inches long, 5.6 inches tall, and 1.3 inches wide. Compare this to the compact Stevens 555 Sporting O/U Shotgun (20ga 26″ model) which weighs 96 ounces—three times heavier despite its shorter barrel. The RM1F's weight distribution balances recoil management without sacrificing carry comfort.
Who is this NOT for?
This pistol is not ideal for new shooters or those seeking concealed carry discretion due to its full-size frame and aggressive texturing. The 4.5-inch barrel and overall length of 8.2 inches make concealment challenging under light clothing compared to subcompact options. Additionally, the $439 price point excludes budget-conscious buyers who might prefer a used Glock 17 at $350.
What's in the box?
You receive the RM1F pistol, one 17-round flush magazine, one 21-round extended magazine, RMR optic mounting plate, cable lock, and owner's manual. The inclusion of both magazine types—unlike many competitors that ship only one—provides immediate versatility for range use (extended) versus carry (flush). Total package weight is 48 ounces including all components.
Is the Rost Martin RM1F worth it at $439?
Absolutely, provided you need a full-size optics-ready pistol with ambidextrous controls and match-grade barrel. The $439 price undercuts comparable offerings from Sig Sauer (P320 XFull at $599) and Walther (PPQ Q4 Tac at $649) while delivering similar out-of-the-box performance. For shooters planning to add a red dot sight, the included RMR plate saves $80-120 versus aftermarket solutions.
Specs at a glance
Video review
Pros & cons
What works
- Optics-ready slide includes RMR plate—saves $120 vs aftermarket mounting
- Ambidextrous controls function identically with 4.5 lb slide release pressure
- 32 oz unloaded weight balances recoil without muzzle flip
- Includes both 17-round flush and 21-round extended magazines
Trade-offs
- No threaded barrel option—cannot direct-thread suppressors without $200 barrel swap
- Grip texturing may irritate skin during IWB carry—requires undershirt or sanding
- Front sight requires proprietary .210" dovetail—limits aftermarket options
Expert review
Key attributes
| upc | 850067485650 |
| manufacturer | Rost Martin |
| manufacturer part number | RM1FBLKOSP |
| action | Double Action Only |
| barrel length | 4.50" |
| caliber/gauge | 9mm |
| capacity | 17 + 1 |
| shipping weight | 3.2 |
| slide description | Optic Ready/Serrated |
Frequently asked questions
- Is it compatible with Glock sights?
- No, the RM1F uses Rost Martin's proprietary dovetail cut—specifically .330" rear and .210" front. You'll need sights designed for Rost Martin pistols, available from Dawson Precision or Night Fision. Installation requires a sight pusher tool, typically a 15-minute gunsmith job.
- Does it fit Safariland holsters?
- Yes, the RM1F fits Safariland 6390RDS series holsters designed for full-size optics-ready pistols. Retention activates at the ejection port, requiring 12 pounds of force to release. Confirm model compatibility using Safariland's online holster finder tool before purchase.
- How long does shipping take?
- Firearms ship via FedEx 2Day to your selected FFL within 3 business days of cleared payment. The entire process—from order to FFL transfer—typically completes in 7-10 days. Your FFL will contact you for pickup once they receive and log the firearm into their bound book.
- Can I return it if it doesn't fit my hand?
- No, firearms sales are final due to federal regulations. I recommend handling a Rost Martin at a local range or store before purchasing. The grip circumference measures 5.9 inches—comparable to a Glock 17 but with more aggressive texturing that some shooters find uncomfortable during extended sessions.