Tag Archives: vis a uppper

Live-Fire Video: Vltor VIS-1 M4/M4A1-Config Select-Fire Carbine

by David Crane david at defensereview.com DefenseReview has received a short video clip from Vltor Weapon Systems that shows their VIS-1 monolithic-type (one-piece) carbine-length upper receiver/Mil-Std-1913 rail system attached to an M4/M4A1 Carbine-config select-fire lower receiver and being run on full-auto at an outdoor range. The weapon is outfitted with a Vltor Carbine/collabsible Modstock, EOTech 552 HWS/HDS (Holographic Weapon Sight/HOLOgraphic Diffraction …

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