Gun L/70, but has since its conception been redeveloped into a dedicated multi-purpose weapon capable of firing both sabot projectiles and programmable ammunition.

[4] It is still being produced and sold (since March 2005 by BAE Systems AB), and several variants exist for both field and naval applications.

The most superficial changes are the longer L/70 barrel, double cooling vents on the jacket and the fact that the weapon comes chambered for a more powerful 40×365mmR cartridge (vs 40×311mmR for the Bofors 40 mm L/60).

The new 40 mm design used a larger 40×365R round firing a slightly lighter 870 g shell at a much higher 1,030 m/s (3,379 fps) muzzle velocity.

The main design change that allowed this increase was the introduction of a loading tray which tilted upwards after chambering a round and deflected the spent casing ejecting after a shot downwards with its bottom.

The improved guns had an increased rate of fire (300 rounds/min), and the loading mechanism was provided with extended guides so that it could hold 22 cartridges.

In 1989 the Royal Netherlands Army acquired 30 Flycatcher systems, each fielded with two modified Bofors 40L70G guns (the appended 'G' is for 'gemodificeerd', 'modified').

[9] In 2014 Indian Army started upgrading its L/70 guns to modern standards electric turret drive system and digital fire control system with thermal imaging cameras, laser range finder, muzzle velocity radar for accurate engagement of targets and has automatic target tracking capability under all weather conditions.

The gun received the coordinates in ‘remote’ mode and aligns itself towards the target allowing the operator to lock on and fire.

Primarily intended for the ground-based air defense (GBAD) role, it is designed as an inexpensive counter-unmanned aerial systems (C-UAS) weapon in addition to traditional aircraft and missile threats.

[17] DARDO is a close-in weapon system (CIWS) built by the Italian companies Breda and Oto Melara.