41. The barrel stops quickly, and the bolt continues rearward, compressing the recoil spring and performing the automated extraction and feeding process. 42. As the recoil spring returns to its uncompressed state, it pushes the bolt body backward with sufficient force to cycle the action. 43. It features an exposed hammer, a magazine, and a fixed barrel that also acts as the guide rod for the recoil spring . 44. A spiral recoil spring is positioned horizontally, directly below the barrel between the parallel guides of the receiver and rails of the breechblock. 45. The magazine follower rises to hold the action open while the cross beam at the forward end of the slide compresses the recoil spring . 46. This allows these pairs of calibers to be used in the same firearm with only a change of barrel, recoil spring and magazine. 47. Some designers handled this problem by making the moving parts of the firearm heavier and made the strength of the recoil spring much greater. 48. The TTR also relocated the recoil spring assembly over the barrel and under the handguard, allowing it to have a true folding stock. 49. The recoil spring is now free to return its stored energy to the cycle of the weapon by beginning to return the slide forward. 50. When the barrel and mechanism reaches the rearmost point in its travel, the recoil springs push it forward back into its normal forward position.
