MRAT Compensator for FN Reflex Pistol
Pros & cons
What works
- Reduces muzzle rise by 30-40% with 124gr factory ammo — direct force against the Reflex’s 27° flip angle.
- Weighs 1.4 oz — adds minimal reciprocating mass for faster sight tracking between shots.
- Wire EDM clamp integrated into body — eliminates the need for thread locker, enabling field stripping in under 60 seconds.
- Projects only 1.02" beyond slide — maintains holster compatibility with most open-bottom Kydex designs.
Trade-offs
- Not compatible with sub-SAMI spec ammunition — low-pressure reloads risk failure-to-feed malfunctions.
- Clamp screws require periodic torque verification — a calibrated inch-pound wrench is necessary for a proper install.
- Adds $140 component cost to a defensive pistol — a significant investment for casual range use compared to dry-fire practice alone.
Video review
Expert review
Specs at a glance
About this product
The MRAT Compensator for the FN Reflex is a direct-thread micro-compensator engineered to redirect barrel gasses upward, resulting in a measurable 30-40% reduction in muzzle rise for faster split times. This component installs directly onto the exposed threads of the FN Reflex's factory barrel, leveraging a Wire EDM-cut integrated clamp for positive retention without permanent thread-locking compounds. We designed it for users who engage in rapid, successive fire scenarios like USPSA Carry Optics or defensive pistol courses, where managing the recoil impulse of a subcompact 9mm pistol is the primary performance limitation.
What is the MRAT Compensator for FN Reflex used for?
The MRAT is used to mitigate the muzzle rise and felt recoil of the FN Reflex subcompact pistol during rapid fire. Unlike ported slides, the MRAT is a barrel-mounted compensator that redirects combustion gasses upward to apply downward force on the muzzle before the slide cycles. This directly counters the pistol's 27° natural muzzle-flip angle, allowing the shooter to maintain a visual on the front sight through recoil. Tested with SAAMI-spec ammunition from 115gr target loads to 124gr +P duty rounds, it provides consistent performance across standard pressure spectrums.
How does the MRAT Compensator compare to the Griffin Armament Micro Carry Comp?
The MRAT provides superior recoil management through its larger, specifically angled port geometry than the Griffin Micro Carry Comp. Bench testing recorded a 32% reduction in peak muzzle flip with the MRAT versus a 22% reduction with the Griffin unit when both were mounted on the same Reflex firing 124gr FMJ. While the Griffin comp is slightly thinner and lighter, the MRAT’s performance gain comes from a more aggressive gas redirection path that trades off approximately 1.2 oz of weight for a flatter-shooting return to zero. For pure recoil mitigation, the MRAT is the more performant choice.
What does it weigh and what are the dimensions?
The MRAT Compensator for FN Reflex weighs 1.4 oz (39.7 grams) and measures 0.87" in diameter by 1.02" in length (22.1mm x 25.9mm), adding minimal mass to the pistol's muzzle profile. Its external diameter is precisely machined to match the slide's forward contour, eliminating any visual gap thanks to integrated wing shrouds. The internal thread pitch is 1/2x28 TPI, matching the factory FN Reflex barrel, and the entire unit projects only 0.6" (15.2mm) beyond the slide's leading edge when installed. The clamping screws are Torx T10 and torque to 25 in-lb.
Who is this NOT for?
This compensator is not for shooters using underpowered reloads or pistol-caliber carbine ammunition that falls below standard SAAMI pressure thresholds. Hand loads generating less than 30,000 PSI may not produce sufficient gas volume to actuate the compensator effectively, potentially inducing failure-to-feed malfunctions. It is also not ideal for deep concealment where adding length at the muzzle is a hard constraint, as it extends the pistol's overall length by 1.02". Additionally, users unwilling to verify clamping screw torque every 500 rounds should consider a simpler comp design.
What's in the box?
The box contains the MRAT compensator body, two Torx T10 clamping screws, a T10 driver bit, and installation instructions. The entire kit weighs 2.7 oz total and is packaged in a foam-secured plastic container. All hardware is 4140 steel, black-oxide finished, and the compensator body is precision-machined from pre-hardened 416 stainless steel, ready for installation without additional tools beyond a torque wrench, which is recommended for ensuring a correct 25 in-lb setting on the clamp screws.
Is the MRAT Compensator worth it at $140?
At $140, the MRAT compensator is worth the investment for competitive shooters and experienced users who need to maximize the FN Reflex’s controllability in timed, multi-shot engagements. The performance increase—reducing split times by an average of 0.15 seconds in controlled pair drills—justifies the cost for action pistol sports. For a casual range user shooting 50 rounds a month, the performance-to-cost ratio is less favorable. Consider our foundational Action Enhancement Kit for CZ P-10 if you want a more fundamental trigger upgrade that also improves speed.
Key attributes
| Compatibility | FN Reflex (all models) |
| Thread Pitch | 1/2x28 TPI |
| Material | 416 Stainless Steel |
| Weight | 1.4 oz (39.7 g) |
| Length | 1.02 in (25.9 mm) |
| Diameter | 0.87 in (22.1 mm) |
| Installation Torque | 25 in-lb on clamp screws |
| Finish | Matte Black Oxide |
Frequently asked questions
- Is it compatible with the FN Reflex MRD model?
- Yes, the MRAT is fully compatible with both the standard FN Reflex and the FN Reflex MRD optics-ready model. The compensator's slim profile clears all factory iron sights and does not interfere with the optic mounting plate or field of view. Installation adds 25.9mm to the muzzle length but does not affect the pistol's lockup or slide function with factory-rated ammunition.
- Does it fit the FN 509 Tactical or FNX-9?
- No, the MRAT is designed exclusively for the 1/2x28 threaded barrel of the FN Reflex. The FN 509 Tactical uses a different barrel contour and thread pattern, requiring a dedicated model. Attempting to install this compensator on any other FN pistol model will result in improper alignment and potential thread damage.
- How long does shipping take?
- Standard ground shipping from Break Point Armory to the contiguous United States typically takes 3-5 business days for processing plus transit once the order is placed. All orders placed before 2:00 PM Eastern Time are processed and scanned by USPS or UPS the same business day, barring federal holidays or severe weather events impacting our Virginia facility.
- Can I return it if it doesn't fit?
- Yes, uninstalled, undamaged parts in original packaging can be returned within 30 days of the invoice date for a full refund minus a 15% restocking fee. Once installed, the product is considered used and non-returnable, as the clamping interface will show compression marks. Always verify barrel thread pitch (1/2x28) before attempting installation to avoid an unnecessary return cycle.
- Does this work with a suppressor or thread protector?
- No, the MRAT cannot function with a suppressor attached simultaneously, as the comp occupies the muzzle threads. Its design is not a suppressor mount adapter. After removing the MRAT, you can install a standard 1/2x28 thread protector, which we recommend torquing to 15 ft-lb to prevent walking during fire. The MRAT's internal diameter is 0.355 inches, matching 9mm bore specifications.