The GrovTec R2S2 – 2 Round Holder M-LOK (model GTAC341) is a direct-attachment rifle accessory designed to keep two emergency centerfire cartridges ready for immediate chamber loading. Built around a Type III black-anodized two-piece machined aluminium base and heavy-duty elastic webbing, this low-profile "Ready to Shoot Two" system secures into a single standard M-LOK slot on a forend or chassis. It provides direct, single-handed cartridge access alongside the action without adding unnecessary forend bulk.

Key Features

• 2-Round Capacity: Securely carries 2 centerfire rifle cartridges directly on the firearm for rapid single-port feeding.
• Single-Slot M-LOK Footprint: Fastens via a single included screw and T-nut, occupying minimal rail space on compatible chassis systems.
• Heavy-Duty Elastic Loops: Retains cartridges firmly against movement while allowing smooth, snag-free removal under field or match conditions.
• Machined Aluminium Construction: Type III black-anodized two-piece aluminium body provides high resistance to abrasion and environmental exposure.

Specifications

• Mounting System: Single M-LOK slot (includes 1 screw and 1 T-nut)
• Cartridge Capacity: 2 centerfire rifle rounds
• Calibre Compatibility: .223 Remington up to .450 Bushmaster and .350 Legend class cartridges
• Construction: Type III hardcoat black-anodized machined aluminium base with heavy-duty elastic webbing
• Packaging Dimensions: Approximately 5.5" L × 3.0" W × 1.5" H

Who is the Grovtec R2S2 2 Round Holder for?

• PRS and Target Competitors — mounts into a single standard M-LOK slot to provide a 2-round cartridge reserve directly beside the receiver, enabling immediate single-port emergency reloads during timed competitive stages.
• Hunters and Field Stalkers — delivers instant access to 2 follow-up rounds spanning calibres from .223 Remington up to .450 Bushmaster directly from the rifle forend, eliminating the need to reach into packs or pockets.

Less suitable for: Shooters using rimfire calibres such as .22 LR or .17 HMR, which are too small for the elastic loop retention, or large-bore calibres like .338 Lapua Magnum and .50 BMG that exceed the loop diameter; these setups require a dedicated large-calibre carrier or rimfire ammo pouch. It is also incompatible with Picatinny rails, KeyMod systems, or traditional non-slotted wooden and synthetic stocks lacking standard M-LOK slots, which require an M-LOK rail adapter or a traditional stock-mounted ammo cuff.