axis of the piston, instead of off-line, radially spaced from the longitudinal axis of the piston, adjacent an outer radial wall of the piston. Such an in-line latching system reduces torque in the spring assembly, which increases the efficiency of the spring assembly and the power of the air gun.
When the air gun is powered by a gas spring assembly, the gas spring assembly is housed within the compression chamber of the rifle. The gas spring assembly includes a piston that defines a sealed interior pressure chamber disposed within the piston. The interior pressure chamber contains a gas, such as air or nitrogen. The piston is slideably disposed over a rod. Cocking the gun moves the piston over the rod, such that the rod displaces the gas withindistribution of the structures formed by MSA-MD simulations relative to the ALPHA1 crystal structure and the overlay of the best predicted structure with the ALPHA1 native structure. (**B**) The Cα RMSD distribution of the structures formed by MSA-MD simulations relative to the 1L2Y crystal structure and the overlay of the best predicted structure with the 1L2Y native structure. (**C**) The Cα RMSD distribution of the structures formed by MSA-MD simulations relative to the PolyAla crystal structure and the overlay of the best predicted structure with the standard conformation. (**D**) The Cα RMSD distribution of the structures formed by MSA-MD simulations relative to the 1UAO crystal structure and the overlay of the best predicted structure with the 1UAO native structure. (**E**) The Cα RMSD distribution of the structures formed