The KRYTAC adjustable battery stock features two different battery configurations

QRS High Capacity Magazine

even in harsh environments

Firing Modes: Semi-Automatic and Safety

Magazine: 26+1 rounds

HK Army HSTL Thermal Lens Style:Smoke The KRYTAC adjustable battery stockThe HSTL Goggle Lens System is composed of virgin optical grade GE polycarbonate inherently UVA \ UVB and IR shielded, every HSTL lens shields your eyes from dangerous sunlight in every playing condition. The interior thermal lens features 3M Foam Sealant, trapping a layer of cool barrier of insulating air, eliminating condensation and encouraging evaporative cooling. Details Anti Fog Thermal Layer Optical Grade Polycarbonate Works only with HSTL