The Interdynamics MKR was a Swedish prototype assault rifle developed in the 1980s. The weapon never proceeded beyond prototype stages. The Interdynamics MKR was originally designed using a 4.5×26mm MKR round using solid copper bullets.

The 4.5mm MKR, also known as the 4.5mm Interdynamic or 4.5mm Kjellgren, was a Swedish prototype rimfire cartridge developed for the prototype Interdynamics MKR bullpup assault rifle and carbine.

The 4.5mm MKR was essentially a .22 WMR rimfire case necked down from 5.6mm to accept a 4.5mm bullet, for use in the Interdynamics MKR rifle and carbine. It would be supplied in single-use, 50-round polymer magazines.

Aug 13, 2024 · Interdynamic AB’s first weird rifle prototype was the MKS. It was created in 1979, as intermediate cartridges were becoming all the rage. The MKS utilized the 5.56 caliber round with a fairly conventional gas-operated design. Most sources list the rounds per minute as between 700 and 1,000.

Because of the combination of thin-walled rimfire case and high-pressure powder charge, MKR rifle was designed to use locked breech, gas operated action with vertically tilting bolt. Rifle fired from the open bolt position, in single shots, 3-round bursts abd full automatic mode.

The Interdynamics MKR was a Swedish prototype assault rifle developed in the 1980s. The weapon never proceeded beyond prototype stages.

Because of the combination of thin-walled rimfire case and high-pressure powder charge, MKR rifle was designed to use locked breech, gas operated action with vertically tilting bolt. Rifle fired from the open bolt position, in single shots, 3-round bursts abd full automatic mode.

The Interdynamics MKR was a Swedish prototype assault rifle developed in the 1980s. The Interdynamics MKR was originally designed using a 4.5x26mm Rimfire round using solid brass bullets.

The 4.5mm MKR was essentially a .22 WMR necked down to a 4.5mm bullet, designed to be used in the Interdynamics MKR rifle. The Interdynamics cartridge featured curved taper and a 4.5mm caliber pointed bullet, made of solid brass.

Jan 27, 2025 · Interdynamics in Sweden [1] Bullpup developed in the 1980s Assault rifle . 2. Detail. The gun body is made entirely of plastic and features a unique semicircular magazine that can hold 50 rounds . [2] .