In part one of our three part series on the Slimline Glocks, Nigel Hulleman compared the Glock 43X and Glock 48, and the result was not what he expected.

Vindicated. That's how I felt when Eemann followed up their flat SA/DA trigger with a curved version ... and called it the Ultimate trigger.

Whenever I think about ballistics at handgun distances - usually when helping people with sight calculations - I think in terms of straight lines. Not because I don't understand the math, but because making the right simplifications can help us see the forest for the trees.

You may find it suprising that we sell three comparable Vortex Venoms for every Viper. I found it suprising that it wasn't more - The Venom is after all more of an all-rounder than the Viper. But our review shows that there is a good reason for the Viper's existence.

Ghost International launched its new Hydra competition holster in May and, three weeks later, I had mine completely stripped on my workbench. I didn't plan to strip it, I just wondered about this. Then that. Then it was all nuts-and-bolts.

The undecided majority is tired of the blame game. They want to know how we are helping to make the system better.

Some countries have relaxed gun laws and little violent crime. Other countries banned guns and are left at the mercy of cartels.

Until the police have taken some basic steps to improve the current licensing process, there is no saying that it cannot work. And until we tried to make it work, there is no sense in pushing for riskier alternatives.

It is important to focus on long-term goals, but critical to navigate the correct route there. Slow feedback loops can cause us to follow a twisty road in generally the right direction, or to go on a tangent and never reaches the destination.

We saw firearm application processing times see-sawing significantly over the past two decades.This is typical of interventions that don't address the core issues: behaviour grows better before the system starts pushing back, and it grows worse.

We are getting to the core of the Systems argument here: Small, well-focused actions can sometimes produce significant, enduring improvements if they’re in the right place.   Systems thinkers refer to this principle as leverage.

Before we move on to discussing levels and flows, let's pause to consider how we should measure... anything.