If by non blowback you mean springers, yeah stick to those those are the best.
If by non blowback you mean a non blowback gas pistol, then shouldn't they be more accurate than blowback pistols?
Guardians of Asgaard - KF32
VFC H&K 416C
VFC KAC SR16 JL Billet SBR
TM FN Five-seveN