Do you know its possible to build a Sten gun, in most household garages, with basic machine tools? And during WWII alot of them were built in just this way.
Colt AR15 Heavy Match Barrel, Harris Light Bipod, x4-12 Variable Magnification 44mm apeture optics (cheapie model but still works very well) is my baby. You can hit a quarter (coin) sized target at 100m with just about every shot with cheapo military surplus ammunition if your a decent shot.
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Vermillion
**MOL**, Men of Leisure