A quick look at the CM093BM AEG from CYMA that is based on the KAC SR-47 and available at Gunfire... "The CM093 carbine replica is a specific hybrid that combines the features of two popular designs: AR15 and AK. The magazine and the magazine well in the AK standard have been adapted to the well-known and liked AR15 platform, thanks to which the replica is characterized by its original appearance and completely new functionality. Carbine’s construction was made almost 100% of metal. The V2 metal gearbox used in the replica ensures smooth and trouble-free operation and is ready for further power tuning."