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Understanding Firearm Optic Mounting Systems

Picatinny vs M-LOK vs KeyMod vs dovetail — a clear guide to rail systems and how they affect your accessory choices.

The definitive Glock 19 vs Glock 17 comparison — size, capacity, concealment, aftermarket support, and which is right for you.

The essential AR-15 upgrades ranked by impact — from optics and lights to triggers, grips, and slings.

A complete guide to picking the right red dot optic for your handgun — covering footprints, MOA, battery life, and co-witnessing.

Transform your pump or semi-auto shotgun with these five essential upgrades: light, sling, stock, sights, and side saddle.

A quick walkthrough of GunUpdate's AI scanner, gun builder, arsenal tracking, and price alerts.