The key features include the complete elimination of muzzle flash, and a reduced noise level PATRIOT PARK /Moscow Region/, May 14. /TASS/. The Kalashnikov Concern has begun large-scale deliveries of standard low-noise firing devices for AK-12 assault rifles to the Russian armed forces, according to Sergey Urzhumtsev, the company's chief designer of small arms. "Until now, the Kalashnikov Concern has not supplied low-noise firing devices (LFDs) for these rifles," Urzhumtsev explained. "Starting