The AKU-94 is a bullpup conversion kit (built and originally sold as a kit by K-VAR) for the AK type rifle, Both the European style AKs (like the Romanian AKs or Egyptian Maadis) and the Chinese style of AK rifle (Type 56) can fit into the kit. In the Mid-2000s, KVAR stopped making and selling the AKU-94 conversion kit. All remaining kits were purchased by Century Arms International, and subsequently used to 'spruce up' AK rifles with a futuristic bullpup look. Currently various imported AK rifles (mostly WASRs) with kit installed, is sold by Century Arms International. This bullpup configuration retains the standard barrel length but the design makes the AK rifle more compact making it more suitable for close quarters battle.
AKs offer several buttstock options besides the classic fixed position. You can find an under-folder and right- and left-side folders. Those are now legal in most states since the sunset of the Clinton 1994–2004 Assault Weapons Ban. If you want to leave behind tradition, you also can buy an AK with an AR-15-style collapsible buttstock . The under-folder is perhaps the most recognizable version, but the side-folders have certainly been around for a while. Many side-folders come in a triangular shape, approximating the basic shape of the wooden buttstock. Or you still can find what is called a wire stock, a single rod extending from the rear trunion and ending at the buttplate. That is also called a crutch-folder since it resembles the end of a crutch that goes under the armpit. The beauty of the side-folders is you can retrofit them to a conventional buttstock AK with little work. Because of its unique rear trunion design, the under-folder is an under-folder for life.