The bolt system was designed by Colorado Shooting Sports. It looks like it offers a significant improvement in reloading time:

One of the true AK innovations of the last 60 years. A left-side cocking system. This project started over a year ago and already hundreds of AKLB units are in service here in and abroad. Several units just finished a punishing 7,000 round torture test.

1.)Make tactical reloads faster and operate more ergonomically to ensure that you stay focused on the threat not on your weapon.

2.)Allow you to keep your hand on the pistol grip which will make you safer and remove movements that take time to learn to do well with a standard right side cocking mechanism.

3.)The top covers charging handle openning will allow your rifle to cool faster during high rates of fire.

The AKLighting bolt is available for the following weapons: AK-47 and all variants, AK-74 and all variants including the AKS-74U Krinkov, Israeli Galil, Finlands Valmet, Saiga rifles and shotguns, RPKs, VZ-58s, All Yugo AKs,STGs, and many more.

The AKLightning Bolt is being sold by Tactical Response Gear for $225.