MP5K/SP5K Complete Conversion Kit Package
Ready-to-install AR-15 TAR compatibility for MP5K-pattern builds.
Listed for PTR 9KT, AP5P/M, MAC5K, ZF5PK, HK SP5K, HK PDW, MP5K, SP5K
TAR systems for MP5K / SP5K & Clones
The K-length guns go by a lot of names — MP5K, SP5K, HK PDW, PTR 9KT, AP5P/M, MAC5K, ZF5PK. They share the pattern this kit is built for. This is a complete conversion package, not a single trip.
1 part listed for MP5K / SP5K & Clones
What a TAR is — and what it is not
A TAR is a trigger assisted reset system: it resets the trigger for you so follow-up shots come faster. One trigger pull still fires one round, every time. It is not a forced reset trigger, it does not fire bursts, and it does not convert anything to automatic fire.
Every unit is CNC-machined in Texas. Installation is covered step by step on our installations page, and the mechanism itself is explained on how TARs work.
MP5K / SP5K & Clones questions
My gun is a clone, not a real HK. Does it fit?
The kit is listed for the clone patterns named on this page. Clone tolerances vary between makers, so check your own gun against the product page before ordering.
What is in the complete kit?
It is a full conversion package rather than a single component. The product page lists exactly what ships.
Is this legal?
Yes. One trigger pull fires one round. A TAR assists reset; it is not an FRT and does not fire bursts.