HK SP5 Trigger Group - Super Safety

War Hammer Armaments OEM Polymer SP5 Super Safety Lower Receiver

War Hammer Super Safety complete lower for SP5 platforms.  Constructed of Kevlar and carbon-fiber–infused polymer, this complete lower is engineered for increased strength, rigidity, dimensional stability, and long-term reliability.

Each WHA lower is fully assembled, inspected, and test-fired prior to shipment. Quality control includes verification of cycling operation, proper fitment of operational parts, tolerance interoperability, reliable ejector and hammer function, hammer spring tension, and hammer tolerance. Each unit is test-fired, inspected, and documented by an armorer prior to leaving WHA's facility.

Includes:

• Complete lower housing only (firearm not included)
• Slip Trip (heat-treated steel)
• 5.56 MG extractor upgrade (for extended service life/higher reliability compared to OEM)
• Upgraded firing pin spring (designed to work better with FRT mode)

Features:

• War Hammer Armaments SP5 lower housing
• Kevlar and carbon-fiber–reinforced polymer construction
• Fully assembled and ready for installation
• Designed specifically for Super Safety MP5K operation
• Test-fired and validated by WHA before shipment
• Verified for selector engagement and consistent trigger reset
• SP5-style grip housing geometry
• Improved rigidity and durability over standard polymer lowers
• Available in HK Parts exclusive color options
• Includes extended service-life extractor spring with each unit

Compatible With:

• SP5, HK94
• SP5L
• PTR 9CT
• In-spec clones and custom builds

Important Fitment Note:

• Due to normal variation in stamped sheet-metal MP5K receivers and clone platforms, rare fitment exceptions may occur. In the unlikely event that a host firearm requires additional adjustment or hammer fitment support, War Hammer Armaments will assist through customer service.
• Additional fitment, installation, and weapon service options are available upon request through War Hammer Armaments.

Installation & Warranty Notice:

• Professional installation is strongly recommended.
• Do not dry fire this lower unless it is properly installed on the firearm. Dry firing the lower while removed from the firearm may damage internal and/or external components and will void the warranty.
• Customers should review all installation instructions and videos before installation. If questions arise during installation, stop and contact War Hammer Armaments customer service for support.
• Please note these weapons have been manufactured to run in semi-auto only and were not manufactured to run in FRT, meaning the wear parts are not considered for bolt gap, rollers, etc. that are not considered in semi-auto; these must be considered for FRT conversions.

Break-in period for all HK MP5 based platforms: Minimum of 650-700 rounds of 115 grain 9mm FMJ, round nose profile, SAAMI Spec ammunition, unsuppressed for any SP5 or clone/custom built variants to properly break in the weapon. These systems run best with a liberal amount of lubricant.

Use only subgun-rated suppressors and only attach suppressor after break-in period as outlined above.

Make sure your suppressor is a subgun-rated suppressor, too, if you plan on using one. And you can only use the suppressor after the break-in period.

We cannot ship Super Safety Triggers to the following states: CA, CO, CT, DE, FL, HI, IL, MA, MD, MN, NJ, NY, OR, and RI.