The R8 is easily one of the best straight pull rifles available on the market. The modular design of the R8 allows easy switching between calibres in a matter of seconds. The rifle can be taken down into four main parts - stock, barrel, bolt and magazine/trigger allowing easy transportation in a compact carry case and cleaning/maintenance is therefore effortless. Another excellent feature is the use of the saddle mount that mounts directly onto the barrel that is simply attached via 2 latches guaranteeing 100% consistent zero upon attachment and removal and allows multiple scopes zeroed to a variety of different calibres. M15x1 threaded barrel.