It is the first kit that turns your old Thunder B into an impact grenade. We are introducing a newly developed model with an improved version that shares the features as the original version:

• Durable made of aluminum alloy;

• Black color anodizing;

• Instant and safe detonation;

• Fully reversible;;

And even more:

• The new ignition system is easier to interchange, more reliable, and easily replaceable

• 360-degree sound diffusion with radial holes that increase sound capability

• Improved compatibility with Thumber B and the cylinder sliding issue is completely eradicated

Kit includes:

• Pin Assembly

• Adapter for 9mm PAK cartridges

• Custom shell with magnetic trigger

No Thunder B parts are included in the kit