IWI Introduces BOOST: Buttstock Power System Promises 3-5x Runtime for AR-15 Electronics
Dateline: Israel – Israel Weapon Industries (IWI) has introduced BOOST, a buttstock-integrated power module designed to supply sustained energy to AR-15-platform rifles’ onboard electronics. The compact retrofit promises three to five times longer operational runtime for devices such as thermal sights, night-vision optics, laser designators, and smart accessories, while keeping weapon handling and ergonomics intact.
Key Features and Capability
IWI’s BOOST houses a field-replaceable, rechargeable lithium-ion battery inside the buttstock, backed by an internal backup power bank that maintains power flow if the primary battery is depleted. The company says the system adds less than 340 grams to the weapon and can be installed at the unit armory level without additional operators, trainers, or any changes to field behavior.
- Runtime: Boosts electronic device operation by 3-5x.
- Weight: Adds <340g to the rifle.
- Battery: Field-replaceable, rechargeable Li-ion with internal backup.
- Integration: Preserves natural handling, sight picture, and firing ergonomics.
- Installation: Armory-level install; no changes to the operator’s workflow.
How BOOST Works
The BOOST kit is a complete system comprising the buffer-tube energy assembly, harness cabling latched to the weapon via connectors, a charger, and a spare battery. The package includes two rechargeable batteries, an AC (standard) charger, and a field charger. The field charger draws power from RT (radio handheld transceiver) batteries or accompanying ground vehicles, allowing units to replenish power without returning to a fixed base.
While the system significantly extends device uptime at the weapon level, it is not fully self-sustaining: users may still rely on broader unit power sources to recharge batteries. Even so, the concept is designed to reduce the number of loose batteries an individual must carry while enabling sustained power across a tactical unit.
Operational Context
IWI positions BOOST as a response to the growing power demands of modern small arms. Electronic enablers-thermal and night vision sights, lasers, and smart modules-are now central to marksmanship and target acquisition. European manufacturer Beretta Defence Technology has described target acquisition as the “most vital component” of modern marksmanship in a warfighting scenario, underscoring the importance of reliable onboard power.
Electromagnetic Signature Considerations
Digitally powered optics and accessories can generate detectable emissions. The use of electronics-whether in red-dot sights, illuminated reticle scopes, laser designators, or smart-rifle systems-creates current flow that inherently produces magnetic fields and emits electromagnetic radiation. This reality remains a tactical consideration even as power solutions advance.
Company Perspective
Ronen Hamudot, the vice chairman of IWI’s parent company SK Group, said: “every gram matters, every second counts, and every watt of power can make the difference between mission success and failure.
“BOOST is a tactical leap forward… reducing logistics and keeping soldiers focused on the mission rather than power management.”
Market Landscape and Alternatives
Infantry modernization programs worldwide are focused on maximizing capability while minimizing soldier load. BOOST is one such approach tailored to rifle-mounted electronics. Elsewhere, the U.S. Army has developed a conformal wearable battery, a flat, flexible lithium-ion pack that attaches to a ballistic vest and functions as a central power node for dismounted troops, highlighting parallel efforts to streamline battlefield energy management.
What’s Next
As small-unit tactics become increasingly digitized, sustained power for weapon-mounted electronics is a critical enabler. IWI’s BOOST aims to extend runtime, reduce loose battery carriage, and simplify logistics at the armory level, while broader soldier-worn and vehicle-based systems continue to provide charging resilience across the formation.
