Rock Island Armory VR80

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Volumes

1. Vol 1 Who Makes It — Armscor, Derya, and a White Shotgun Called Stormtrooper A Philippine brand, a Turkish factory, a distributor's colourway, and three published weights for one gun
2. Vol 2 The VR Family and the AR Question — From the VR60 to the VR80, and What AR-15 Parts Fit A box-fed shotgun that moved its gas system onto the barrel, took on AR takedown pins, and still keeps its own trigger
3. Vol 3 How It Works, and How to Keep It Working — Gas System, Break-In, Field Strip, Maintenance and Repair A ring piston on the barrel, two interchangeable pistons, a load floor in writing, and a manual that stops at step twelve
4. Vol 4 A Slug Through a Smooth Bore — Foster's Patent, the Rifled Choke Tube, and the Sabot Alternative What the 1947 patent actually claims, what three inches of 1:35 rifling can do to a soft lead slug, and what nobody has measured
5. Vol 5 50 to 150 Yards — the Slug Ballistics, and Why a 1-6× Fits What the makers publish to 125 yards, what their own tables reveal about the 'high-velocity' load, and what an optic calibrated for a rifle does on a slug gun
6. Vol 6 The Gun Documented Here, and the Rules It Hunts Under A white VR80 as configured in September 2026, the parts source that disappeared, and why five rounds plus one is exactly Michigan's limit