The Krinker Plinker is a kit that includes everything but the receiver, trigger group, and their internal parts to convert a Ruger 10/22 rifle into a replica AK-74U Krinkov assault rifle. The kit includes a new sixteen inch heavy barrel, AK-style pistol grip and handguard, an extended magazine release, a fake sound suppressor (silencer), a good set of adjustable peep sights, a Picatinny rail for mounting optics, hardware, and a Krinkov style side-folding stock. The metal parts are either black anodized aluminum, or black oxide coated steel. The kit also comes with a good set of illustrated instructions for installing the kit on your Ruger 10/22 receiver.
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UPDATE
A custom camo paint job: