MP5/SP5 Full Size Complete Conversion Kit Package
Ready-to-install AR-15 TAR compatibility for full-size MP5/SP5 builds.
Listed for HK SP5, PTR9 CT 9RS, AP5, MAC, ZF5, POF5
TAR systems for MP5 / SP5 Full Size & Clones
Full-size roller-delayed guns — HK SP5, AP5, ZF5, POF5, PTR9 CT 9RS and similar clones — take the full-size kit rather than the K-length one. Match the kit to the length of your gun.
Running a short K-length gun instead?See the MP5K / SP5K kit
1 part listed for MP5 / SP5 Full Size & 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.
MP5 / SP5 Full Size & Clones questions
How do I know if I need full size or K?
K-length guns (MP5K, SP5K, PDW) take the K kit. Full-size guns take this one. Ordering the wrong length is the most common mistake on this platform.
Does it fit clones as well as genuine HK?
It is listed for the clone patterns named here, but clone tolerances vary by maker — verify against the product page for your specific gun.
Is this legal?
Yes. One trigger pull, one round. A TAR assists reset only.