Kozak FC2 is a new generation of PCP rifles in bullpup design. FC means Fully Compacted. The cylinder and barrel are maximally located inside the stock. The compact Kozak FC air rifle with symmetrical buttstock provides comfortable grip and comfortable shooting for both right and left handed shooters.
The cocking lever is now located in the centre of the rifle, directly above the 2 stage trigger and safety lever. This positioning allows for faster reloading without changing position or moving out of the line of sight. The Picatinny rail is 184mm long and has 17 slots, which allows to place any optic at a comfortable distance from the eyes of a shooter of any build. In addition, there are two Picatinny rails on the receiver with 7 slots for attaching additional equipment (torch, illumination, camera, etc.).
The buttstock cheek pad is not adjustable and has a genuine leather overlay. In addition to aesthetics, it makes the shooter more comfortable in high or low temperatures. The backpad with ZBROIA logo can be adjusted vertically.
Kozak FC2 rifle now uses magazines similar to the Sapsan model. This allows to use calibres: .177, .22, .25, .30 and to reach energies from 7.5 to 70 Joules. The rifle is available with 450 mm or 550 mm rifled barrels in combination with 230 cc or 290 cc high pressure tanks (maximum 300 bar).

The rifle comes with two spare magazines and 2 filling adapters (made of brass) for filling the tank with an air cylinder or pump: a threaded one and a quick release for quick disconnection.
| № | Name | Model | Total Length, mm | Width, mm | Height, mm | Barrel Length, mm | Reservoir Volume, cc | Calibre, inch | Magazine Capacity, pcs. | Weight, kg | Maximal Energy*, J |
| 1 | Kozak FC-2 | 450/230 | 714 | 55 | 186 | 450 | 230 | .177 .22 .25 .30 |
10 | 3.1 | 7,5–70 J |
| 2 | Kozak FC-2 | 550/290 | 814 | 55 | 186 | 550 | 290 | .177 .22 .25 .30 |
10 | 3.4 | 7,5–70 J |
*The manufacturer may limit the energy of shots or make any other changes to the scheme of the rifle in accordance with the local laws of the country where airguns will be exported.