HK ARMY HSTL NECK PROTECTOR - BLACK hpa others It is compatible with most

It is compatible with most standard Version 2 M4/M16 AEG gearboxes and works well with traditional trigger contacts

aiming at out to 200 yards

high-quality MOSFET without the complexity of a fully programmable ETU

High impact resistance

2 x CR123 3Volt lithium batteries (Not Included)

HK ARMY HSTL NECK PROTECTOR - BLACK hpa others It is compatible with mostThe HK Army HSTL Neck Protector was designed to ensure that your neck stay protected during game play and close impact shots. Take a Closer Look HK Army HSTL Neck Protector utilizes durable materials to optimize your in game experience, tough grip adjustable velcro and high density compressed foam. The sizing is universal and fits most people.