A&K 2500 Round Box Magazine for Airsoft M249 AEG LMG Hi Cap Magazines Operates below 300 psi BO AA77 TOXIC Operates below 300 psi Power efficient OLED display • Zero Power Drain • Processor Gated Battery Monitor • Audible Speaker • RF ready with hopper transmitter control interface • 2 MIPS MCU with 100% optimized native RISC • Power Saving Eye and Solenoid Modulation controls • Internal “Tourney Lock” switch • 80g microswitch trigger Firmware Features • SIX completely independent Player Profiles easily loaded “on demand” • Programmable “Power Up” and “Tournament” active profiles • Easy trigger programmability and configuration menu navigation for unprecedented speed and ease in making adjustments • Highly verbose menus and setpoints on the high resolution OLED almost make user manuals obsolete… intuitive and self descriptive • Instant access “Hot Start” options to override operations without programming • 8 fully adjustable base firing modes – Semi while others require the user to press a winding button Compatible with A&K Classic Army and other similar M249s