KAK Industry Castle Nut Multi Tool
- 4140 steel, hardened coated manganese phosphate .
- Castle nut wrench, open styles (works with all styles of tubes)
- 750 flash hider wrench flats
- A2 rifle buffer tube
- 1/2" breaker bar / tension wrench
- 3/16" allen (for grips)
- 3/8" allen (for scope mounts and other accessories)
- Bottle opener