TacFire KeyMod Picatinny Rail — 2" / 5-Slot, Black Anodized (Model MAR101 / UPC 811261027145)
Add a compact, rock-solid Picatinny mounting surface exactly where you need it with the TacFire KeyMod Picatinny Rail (MAR101). This short 2-inch rail section provides 5 Picatinny slots in a lightweight, low-profile package—perfect for mounting lights, lasers, offset sights, hand stops, or QD adapters on KeyMod-compatible handguards. Machined for a precise fit and finished in matte black anodize, the MAR101 blends modular convenience with dependable stability for duty, competition, and recreational builds.
Overview — Why this rail matters
KeyMod handguards are wonderfully modular and low-profile, but many proven accessories still ride on a Picatinny footprint. The TacFire MAR101 gives you that legacy mounting interface in a tiny footprint so you can place accessories in the exact spot your ergonomic setup demands without adding unnecessary bulk or weight to the fore-end.
Key Features & Benefits
Compact 2" length: Minimal profile adds mounting capability without changing your handguard ergonomics.
Five Picatinny slots: Enough rail space for small-to-medium accessories—ideal for offset irons, compact lights, lasers, and hand-stops.
KeyMod attachment: Designed to lock into KeyMod pattern slots for a secure, repeatable fit that stays solid under recoil.
Precision machined aluminum: Strong yet lightweight construction from aircraft-grade aluminum preserves balance and reduces added mass.
Black anodized finish: Matte, low-glare anodizing resists corrosion, abrasion, and everyday wear while matching common black furniture.
Low-profile design: Keeps hands comfortable and reduces snag points while offering proven Picatinny stability where needed.
Easy installation: Typically installs with included KeyMod hardware—requires only a hex key or Allen wrench for quick, tool-minimal mounting.
Versatile applications: Works on any KeyMod handguard to convert a single KeyMod slot into a standard 1913 rail footprint.
Performance & Use Cases
The MAR101 is ideal when you want a small, dependable rail section for mission-critical accessories without running a continuous rail along the handguard. Typical uses include:
Mounting a compact weapon light at a forward or offset position.
Attaching laser aiming modules or IR pointers.
Adding a mini vertical/horizontal grip or hand stop for positive placement.
Installing backup iron sights or micro optics adapters that require a short Picatinny rail.
Creating a repeatable mounting location for bipod adapters or QD sling mounts in close-range setups.
Compatibility & Fitment Notes
Designed for KeyMod handguards — not compatible with M-LOK without an adapter.
Confirm your handguard’s KeyMod slots are standard; proprietary or third-party variants with altered spacing may require verification.
Works with standard Picatinny/Weaver accessories that accept 1913 rail mounting.
Check package contents for mounting screws/nuts; some sellers include hardware while others may require separately purchased KeyMod screws.
Installation (High-Level)
Align the rail’s KeyMod “toe” with the handguard slot and seat it into the cutout.
Rotate or slide until the rail sits flush with the handguard surface.
Insert and tighten the supplied KeyMod screws/nuts to secure the rail (use a properly sized Allen/hex wrench).
Re-check torque after initial use to ensure a wobble-free fit.
Avoid over-torquing hardware; use moderate, even torque and re-check after your first range session.
Care & Maintenance
Wipe down after use to remove dirt, carbon, and moisture.
Inspect screws periodically and re-torque if needed to maintain a secure, wobble-free mount.
Avoid harsh abrasives that could wear the anodized finish; a soft brush and mild cleaner keep the rail looking and functioning like new.
Frequently Asked Questions (FAQ)
Q: Will the MAR101 add a lot of weight to my handguard?
A: No — at 2 inches and machined from aluminum, it’s designed to be minimal weight while offering robust Picatinny mounting.
Q: Can I mount a full-size flashlight or only micro lights?
A: The MAR101 is best for micro and compact lights. Heavier full-size lights may be better mounted across a longer rail section or multiple adjacent sections.
Q: Is this compatible with M-LOK handguards?
A: Not directly. For M-LOK, use a dedicated M-LOK to Picatinny adapter or an M-LOK-specific rail section.
Q: Are mounting screws included?
A: Many kits include KeyMod hardware—confirm with the retailer. If screws aren’t included, use KeyMod-specific fasteners rated for your handguard.
Technical Specifications
Manufacturer: TacFire
Model: MAR101
UPC: 811261027145
Mount Type: KeyMod to Picatinny rail section
Length: 2.00 inches
Picatinny Slots: 5
Material: Aircraft-grade aluminum (precision machined)
Finish: Black anodized (matte)
Intended Use: Mounting Picatinny accessories on KeyMod handguards
SEO-Friendly Product Summary
The TacFire KeyMod Picatinny Rail (Model MAR101) is a 2-inch, 5-slot Picatinny rail section that converts KeyMod slots into a secure 1913 mounting surface. Precision-machined from aluminum and finished in matte black anodize, the MAR101 is perfect for mounting compact lights, lasers, backup sights, and hand stops on KeyMod handguards—adding functionality without bulk. UPC: 811261027145.
Add targeted accessory real estate where it counts—lightweight, low-profile, and built for repeatable performance. The TacFire MAR101 KeyMod Picatinny Rail is the small upgrade that makes a big difference in modular rifle customization.
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