Action Army VSR-10 Spring Guide

The spring guide sits inside the cylinder with the spring wound around it, and its job is to stop that spring buckling sideways as it compresses. A guide that is undersized or out of true lets the spring kink, and a kinked spring delivers a different amount of energy each shot.

Action Army machine this one from aluminium alloy to Marui standard dimensions, and unusually for this corner of the market they publish the numbers: 7 mm diameter, 13 g. That means you can check it against what you are replacing rather than hoping.

It suits the VSR-10 and the replicas built to that same pattern.

Specifications

Good to know before you buy

Consistency is the point of this part, not power. A straight spring gives you the same energy shot after shot; it does not give you more of it.

Worth fitting whenever the spring is changed, because the cylinder is open anyway and a new spring on an old guide is half a job.

It is cut to Marui standard, so check your rifle follows that standard if it is a clone.

Aluminium alloy rather than steel keeps the reciprocating weight down inside the cylinder.

Frequently asked questions

What does a spring guide actually do?
It keeps the spring straight as it compresses. A spring that buckles sideways delivers inconsistent energy, which shows up as a wandering muzzle velocity.

Will this increase my FPS?
No. It makes the energy you already have more repeatable, which is what matters on a bolt rifle.

What size is it?
7 mm diameter and 13 g, both published figures.

Does it suit clones?
It is cut to Marui standard, and the published fitment covers the rifle plus replicas built the same way. Check yours follows that standard.

Should I change it with the spring?
Yes. The cylinder is open for both, and a new spring running on a worn guide gives up half the benefit.