AK-74 Test Build 1

First attempt so far. It's very similar, structurally, to its predecessor. The dimensions are slightly changed in a lot of places, though, so parts won't necessarily be 100% compatible. The stock and receiver are a bit narrower, for example.
The muzzle brake and magazine turned out well. A couple of parts like the gas block and handguard cap turned out to be slightly off, and I've since adjusted them. For the next test build, I've also introduced a few additional details like the rear sling loop and distinctive grooves in the stock, but I don't know when I'll get a chance to build the next test build.
There is a pair of springs attached to the trigger, pushing it back forward. I was unsuccessful in installing a good hammer spring, but I'll keep trying. The bolt doesn't grab cartridges just yet, but it's a work in progress. I made a magazine follower than can move, and doesn't require a large spring (there is an internal secondary "floorplate" not very far below the follower). This version has a solid barrel, but I've since introduced a way to hollow out a space for the chamber - just haven't test built that yet.

The grip looks the same, but it's now constructed like the AR grips, that is, with a series of half-cylinders on the front and back, so it should be easier to build than the previous AKM grip.