Product Details
Extra Power HK hammer spring for your PTR-32, HK21, PSG-1, MP5 or other clone. For those wanting more pop to their hammer this is a great upgrade. Perfect for hard primers in surplus ammo. This is a 'must have' for PTR-32 7.62x39 style weapons.
I'm not sure if this was originally an early HK21 or PSG-1 hammer spring. They are similar in coil-thickness to a G3 hammer spring, but slightly longer than an MP5 (see images). Whatever they were intended for, these are the perfect upgrade for your hard surplus primers or clones that need a little extra help.
