the Brownells Bolt Heat Sinks provide protection to locking lugs when welding or forging bolt handles by pulling heat away from these critical areas and dissipating it. Threaded to fit securely into rear of bolt body, giving additional protection to interior threads by preventing scale formation. Flats are milled on end allow use of wrench.


Model #1 fits 1903 & 03A3 Springfields. Model #4 fits Remington 700s

Bolt Heat Sink dimensions: 4.25” (10.8cm) – 5.5” (14cm) long depending on model