Wolverine MTW Standard Hop Nub

Pressure from the hop arm reaches the bucking through this one small component, so it carries the whole load on a single face. That is why it degrades: it gradually spreads, glazes or sinks, and the hop you dialled in stops being the hop you have.

Because it is cheap and buried, it is usually the last thing people suspect. A rifle that needs more and more hop adjustment to hold the same point of impact, or one that drifts across a long game, is often a tired nub rather than a tired bucking.

This is the standard Wolverine item for the MTW hop unit, so it is the shape the chamber was designed around rather than an aftermarket profile. If you are stripping the hop anyway, changing it costs very little.

Specifications

Good to know before you buy

Order one with a service kit rather than on its own. At this size the postage matters more than the part, and it is the sort of thing you want already in the drawer when the hop unit is in pieces on a Friday night.

Wind the adjuster right down before the first shot. A fresh face bites harder at the same setting, so the number you were running before fitting will be too much hop afterwards.

Frequently asked questions

How do I know mine has had enough?
Lift it out and look straight at the working face. If it has gone glassy, squashed flat or hollowed in the middle, its shape has moved and so has your hop.

Is this the bucking as well?
No, the nub only. The bucking is a separate part and the two are usually worth changing together.

Will it fit the CNC hop-up chamber too?
It is the standard MTW nub. If you are running the machined chamber or an aftermarket hop unit, send us the build and we will confirm the fit first.

Does it change my velocity?
Not directly, but it changes how the bucking grips, so re-chronograph after fitting rather than assuming the numbers held.