STZA-11 Recoil system is appointed for working site the job of which is the testing by using of ballistic gauges and cartridges. The STZA-11 Recoil system is appointed for clamping of Ballistic breech BB-20, Universal Ballistic Breech UZ-2010 or UZ-2002 together with the ballistic barrel up to calibre 20 mm. STZA-11 Recoil system allows shoot of ammunition which gives 100 kJ of muzzle energy
| Height | 133 mm |
| Length | 1188 mm |
| Width | 280 mm |
| Mass | 70 kg |
| Max. force of recoil springs | 5240 N |
| Max. Recoil stroke | 150 mm |
| Clamping strip pitch | 230 mm |
| Clamping strip length | 900 mm |
