HK MP5 Hammer Strut Pin Features The HK MP5 Hammer Strut Pin is built to the same manufacturing standards as the original component ensuring correct fitment within the MP5 and SP5 fire control group that maintains proper hammer strut geometry and consistent trigger function through thousands of cycles. As a factory HK component it matches the original specification precisely preserving the smooth reliable trigger performance that MP5 and SP5 owners depend on for consistent ignition and reset. Its factory origin guarantees the compatibility and long-term durability that aftermarket alternatives cannot replicate on one of the world s most recognized and respected firearms platforms. Correct hammer strut pin fitment is critical to maintaining the MP5 and SP5 s legendary trigger reliability and this factory replacement ensures that function is restored to the original design specification without compromise. Simple to install using standard armorer tools it eliminates the fitment risk associated with non-factory components in a precision fire control assembly. For MP5 and SP5 owners and armorers who demand factory-correct components throughout the fire control group this hammer strut pin is the only acceptable replacement. HK MP5 Hammer Strut Pin Specifications Manufacturer: Heckler and Koch Model: MP5 Hammer Strut Pin Firearm Fit: HK MP5 HK SP5