SOLD Laylax M4 wrench

This wrench is for M4/HK416, but also fits the stock tube ring on M4 Gas Machine Gun Series. It has two options one for the front delta ring / castle nut which can get loose over time from vibrations at the front of the AEG. And the second is for the castle nut / locking ring at the back on the stock tube which also can get loose through vibrations.  Tightening the front castle nut can often fix 99% of barrel wobble.

Its important to keep the stock tube castle nut / locking ring tight, this prevents damage to the stock tube threads.