The GrovTec US Inc 6 Inch 15 Slot Keymod Picatinny Rail, Black Hard Anodized (GTSW230, UPC 811071012300) is a KeyMod-compatible accessory rail designed to add a MIL-STD-1913 Picatinny interface to modern modular handguards. Precision CNC machined from lightweight aluminum and finished with a Type III black hardcoat anodizing, this 6" rail section offers 15 continuous slots for mounting lights, lasers, foregrips, and other Picatinny-based accessories on AR-platform and other KeyMod-equipped rifles. Palmetto State Armory+2blackmarketarms.com+2
Model Identification and Core Specifications
This rail section is typically listed with the following identifiers for cataloging, ordering, and inventory control:
The GTSW230 is part of GrovTec’s KeyMod Picatinny rail series and is specifically intended for KeyMod mounting surfaces, not M-LOK or traditional non-modular handguards. redriverreloading.com+2GrovTec+2
Construction, Material, and Finish
The GrovTec GTSW230 is built around a solid aluminum body designed for strength and minimal added weight:
Type III anodizing increases surface hardness and helps protect the rail from corrosion, impact, and repeated attachment/detachment of accessories, making it suitable for field, training, and duty environments.
Some distributor feature lists also note beveled ends to reduce snagging and remove sharp edges, contributing to a smoother profile on the handguard. redriverreloading.com+2Ammunetix™️+2
Picatinny Interface and Accessory Compatibility
On its top side, the GTSW230 uses a MIL-STD-1913 Picatinny pattern, giving it broad compatibility with common firearm accessories: Palmetto State Armory+2Classic Firearms+2
Weapon lights and illumination systems
Laser aiming modules
Offset or inline optics mounts and micro red dots (where length and position allow)
Vertical grips, angled foregrips, hand stops, and barricade devices
Rail-mounted sling adapters and QD sockets
The 15-slot length provides ample mounting surface for either a single large accessory or multiple compact components, while allowing positional adjustment for eye relief, switch reach, and ergonomics. Several product descriptions specifically highlight that the extended slot count facilitates wide adjustment of eye relief and accessory placement along the rail. Kilo Charlie's Shooting Range+3Palmetto State Armory+3Classic Firearms+3
KeyMod Mounting Interface
On the underside, the GTSW230 is machined to interface directly with KeyMod handguard systems:
This dedicated KeyMod design avoids the need for adapter plates and ensures a low-profile, rigid attachment directly to the handguard.
Included Hardware and Installation
GrovTec ships the GTSW230 with the hardware needed for typical installation:
Installation overview (high-level):
Position the rail on the KeyMod handguard where you intend to mount accessories, aligning the KeyMod holes on the rail with the cutouts on the handguard.
Insert the KeyMod nuts through the slots from the inside of the handguard or as specified by GrovTec’s instructions.
Engage the screws from the top of the rail into the nuts, and lightly tighten.
Adjust final position, ensuring the rail is straight and fully seated.
Torque screws evenly with the provided Allen key, following typical KeyMod torque recommendations or GrovTec’s guidance.
Correct installation will result in a secure, rock-solid interface between the Picatinny rail and the KeyMod handguard, without rattle or movement during recoil.
Dimensions, Form Factor, and Profile
Distributor and manufacturer data agree on the core dimensional attributes:
While exact weight figures for the bare rail vary between vendors due to packaging and rounding, the component is widely described as lightweight, appropriate for rifles where maintaining a balanced front end is important. PTI PORTAL+2The Professional Gunfighter+2
The beveled ends help mitigate snags on gear, sling straps, or barriers and provide a smoother contour when moving the rifle across kit or around cover. redriverreloading.com+2Ammunetix™️+2
AR-Platform and Tactical Application
Most listings categorize the GrovTec GTSW230 as an AR-platform accessory:
AR-15 / AR-style rifles: The rail is frequently described as an AR-platform Picatinny KeyMod rail, making it a natural fit for KeyMod AR-15 builds used in defensive, training, or competition roles. Classic Firearms+2The Professional Gunfighter+2
Other KeyMod firearms: Any rifle, carbine, or shotgun equipped with a KeyMod fore-end can use this rail as long as the slot spacing and overall geometry are compatible.
Typical user scenarios include:
Adding a weaponlight at the 3, 6, or 9 o’clock positions on the handguard.
Mounting a vertical or angled foregrip for improved control during rapid fire.
Installing offset optics or backup sights on the side rail space.
Providing a mounting base for bipods or barricade stops at the bottom of the handguard. RK Guns+3Palmetto State Armory+3redriverreloading.com+3
Because the rail is modular and removable, it supports a “configure as needed” approach where accessories can be repositioned or removed without changing the entire handguard.
Durability and Environmental Considerations
The combination of CNC-machined aluminum and Type III hardcoat anodizing is intended to withstand:
Repeated recoil cycles without deformation at the KeyMod interface.
Mechanical stress from mounted accessories, including lights and grips that may experience leverage forces or impacts.
Exposure to typical field conditions, including moisture and cleaning solvents, when used and maintained according to standard firearm practices. GrovTec+3Palmetto State Armory+3blackmarketarms.com+3
This construction helps ensure that the rail remains a stable foundation for optics and accessories that depend on repeatable positioning.
Technical Specifications (Summary)
GrovTec US Inc 6 Inch 15 Slot Keymod Picatinny Rail – GTSW230
By combining a 6-inch, 15-slot MIL-STD-1913 Picatinny rail surface with a dedicated KeyMod underside, solid CNC-machined aluminum construction, black Type III hardcoat anodizing, beveled low-snag ends, and included mounting hardware, the GrovTec US Inc 6 Inch 15 Slot Keymod Black Anodized GTSW230 provides a technical, modular solution for expanding accessory mounting options on AR-platform and other KeyMod-equipped rifles.
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