Laylax M4 Wrench
- Laylax two 2 Way Wrench Tool For M4/HK416 Next Generation Recoil Shock Series & M4 GBBR Series.
- 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.