The Engel Ballistic Research 7.62 x 39 Subsonic “Jackhammer” round is designed to feed and function M16/M4 weapons in this caliber in both semi- and full auto. It utilizes a 220-gr. projectile. The round also works very well in AK-47 (Kalashnikov Weapons) with slight ramping. Cycles both weapons with or without a suppressor. We do not use fillers, which tend to clog suppressors. Independent testing has given sub-1/2 MOA accuracy at 100 yards using aimed semiautomatic fire. Light recoil and enhanced controllability make this ammunition extremely effective in full automatic mode. A true breakthrough in subsonic ammunition in this caliber.

This ammunition revolutionizes subsonic hunting in the 7.62 x 39mm caliber. In the past, the terminal ballistics of subsonic ammunition, including the 7.62 x 39mm, have been limited in respect to knock down power and wound channel size by projectiles which did not expand. Engel Ballistic Research’s new 7.62 x 39mm "Ghost" Subsonic Expander maximizes the transfer of energy on live targets exponentially by utilizing a projectile which dramatically and rapidly expands on impact with soft tissue creating a large cavitation while at the same time cutting through live tissue in a way similar to a broad head on an arrow.