Installation is easy with the one piece stainless steel guide rod assembly.  The spring is captured on the guide rod can’t get lost.   Upgraded Spring for long lasting durability, and performance; replace your two piece factory guide rod with the drop in, TANDEMKROSS “Sentinel” Captured spring rod, for reliable and consistent cycling.   *Fits all SW22 Victory Pistols*   As with all TANDEMKROSS products, the SW22 captured guide rod comes with a lifetime guarantee.