The Gruman Sentinel M-11 anti-armor rifle is hardly state of the art, but remains in heavy use largely due to high manufacturing tolerances that allow for home production from ineradicable STLs. Although intended for emplacement, the weapon is human portable. It is typically operated by teams, one member carrying the large transformers necessary to operate the rifle from grid current. Do not disregard the weapon because of its age; a lucky shot can take down a modern panzer, and the weapon is ubiquitous enough that somebody, somewhere, is going to get lucky.
Inspired by kitbash of badking.com.au parts; kitbashed for inspiration, but created from scratch. This is maybe my first real hard surface work, I'm not great yet. Includes CC0 textures, some made by me, some not, including HDRI for world lighting. 8493 verts base, bearable without subdiv (octagonal cylinders), pictured with subdiv 2; you could still knock plenty of verts off by replacing a few things with textured quads without any real loss. Materials are a combination of procedural and tiling bump/normal; there can be some UV interpolation errors apparent with subdiv. Non-intersecting, bakeable UV map ("ao", selected in .blend) but textures aren't baked. Includes a custom procedural camouflage node group and a custom clearcoat node group, as well as Schlick fresnel featured in a different one of my blends, you might find those useful. I use RGB curves and math where other people use color ramps, and I don't differentiate between color and vector, it's all float3 to me. Somewhat NPR, that's my style, maybe it's a weakness.