Original sentence: The fact that the weapon in stock configuration lacks a pistol grip makes most variants of the SU-16 legal in jurisdictions that maintain "assault weapons bans" based on cosmetic features (the designation of the CA model, despite Kel-Tec's allusion to mixing features of the C and A models, strongly suggests that the design was tailored to California's restrictive laws)
Edited sentence: Its AK-47-derived gas-piston operating system is an inherently reliable design, and is generally superior to the direct-gas impingement system of the AR-15 and M-16.The fact that the weapon lacks a pistol grip makes most variants of the SU-16 legal in jurisdictions that maintain "assault weapons bans" based on cosmetic features (the designation of the CA model, despite Kel-Tec's allusion to mixing features of the C and A models, strongly suggests that the design was tailored to California's restrictive laws)