Lego minifig compatible Custom BrickArms Mk 2 Frag Grenade. A classic of warfare, a fragmentation grenade strikes at the enemy with a powerful explosion and razor-sharp shrapnel. Terrifyingly effective as an anti-personnel weapon, BrickArms now lets you add this iconic weapon to your minifigs' arsenal with the BrickArms Mk2 Frag Grenade, a highly detailed accessory that beautifully captures the segmented look of this style of grenade.