GPT 6 Piece Punch Set

Pin punches are the unglamorous tools in a tech kit. Nobody puts them on social media, but try field-stripping a GBB pistol or removing a stuck hop unit pin without one and you'll quickly learn why six different diameters matter. Using a punch that's too small bends the tip and can leave fragments inside the receiver; using one that's too big chews up the pin head and the surrounding metal. Match the punch size to the pin diameter and the job becomes straightforward.

The six sizes in this set — 1mm, 1.5mm, 2mm, 3mm, 4mm, 5mm — cover the full range of pin sizes you'll meet on standard airsoft work. The 1mm and 1.5mm handle small pistol-frame pins and trigger-group internals. 2mm and 3mm are the workhorses for most M4-pattern AEG receivers, takedown pins, and selector retainers. 4mm and 5mm cover larger pins like AK receiver pins and some stock-tube fittings.

Stored together so you don't lose them in the toolbox — pin punches are the most easily-misplaced items in any workshop, and a labelled rack or pouch makes the difference between finding the size you need quickly or hunting through a drawer mid-job.

Specifications