Wosport MK4 Chest Rig Insert 40mm Grenade Pouch — Grey

The Wosport MK4 40 mm grenade insert is a modular panel designed to integrate into the MK4 chest rig and carry up to three grenades in an organised, immediately accessible layout. It is aimed at dynamic shooters and operators who use the chest rig as their primary platform and want to add capacity for smoke grenades, training grenades or other cylindrical items of compatible diameter without resorting to bulky external pouches.

Retention is handled by three fabric loop retainers: an open-top solution that allows single-motion extraction without buttons or velcro to undo. The trade-off is passive security: the loops hold well during ordinary movement, but do not actively lock the grenade in place the way a positive snap retention would. Those operating in high-physical-demand environments — climbing, rolling, close-quarters — should assess whether this level of retention is sufficient for their use case, or whether they would prefer a pouch with positive closure.

The modular design allows the insert to be paired with other panels from the same MK4 family, configuring the chest rig for the specific task without modifying the load-bearing platform. The robust textile construction holds its shape even when empty, making one-handed grenade reinsertion straightforward after use.

Key points

• Three 40 mm slots allow the load to be distributed symmetrically across the chest rig without overloading one side.
• The open top with loop retainers provides immediate extraction, with no preparatory actions that would slow down the operational sequence.
• MK4 modularity allows the insert to be added or removed in seconds, adapting the configuration to the task without changing the platform.
• The semi-rigid structure keeps the slots open even when empty, allowing fast reinsertion even under stress.
• The compact format does not take up valuable frontal space, leaving freedom of movement for the arms and harness.

In the box

• 1 x Wosport MK4 40mm grenade insert