Rob Allen Conversion to roller gun using MVD Roller Head

[@robertkeaton4904]

I own a tuna rail gun and was gifted a MVD roller head. I watched this video and to drill the hole he first suggested that you need a 3.3mil drill bit. Then he suggested that he should have used a 4mm drill bit. I have the 4mm drill bit from attaching the anchoring screw at the grip of the gun. Can I use a 4mm drill bit to drill the hole for the screw already in the gun. Making sure before I even take it apart. Which size hole punch and screw would I use.

[@jargo6435]

What did you do with the old hole ?

[@Gearsub]

will this work well with spearshafts that do not have the shark fin? becasue I think the rob allen shafts generally come with the cut notch not the shark fins

[@coastalagenciesaustralia4897]

It works fine with both, I have used both notch and finned shafts. I ma currently running 174ph Triple Finned 7mm Cressi shaft and I am very impressed with the it,

[@tuanaznizan1812]

how to buy that MVD Anchoring system for this?I can using a normal screw but want it more tidy and look pretty.Thanks

[@MrBoonger]

Just Contact you local MVD stockist.

[@davidkoba]

what internal diameter with this roller head fit?

[@coastalagenciesaustralia4897]

The RA Barrel is 26.5mm iD

[@RoyceGetit]

MVD or Mannysub?

[@coastalagenciesaustralia4897]

Either or, the MVD is cheaper the Mannysub is better quality but very expensive for what it is.

[@seaman1965]

Probably very unhappy charge when the installed coil ...