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The Rost Martin RM1C Comp accepts CZ P-10 series magazines (such as the CZ P-10 C) as a compatible aftermarket option, though base plate and follower designs may differ slightly from factory options. Compatible Magazines • Rost Martin Factory Magazines: Official steel-bodied magazines (made by Mec-Gar) available in 10-round, flush-fit 15-round, and 17-round extended configurations via the Rost Martin Official Store. • CZ P-10 C Magazines: The magazine body fits and functions in the RM1C platform, though factory base pads may not sit completely flush without modification or specific base plate compatibility. • Other CZ Variants: Users and reviewers note compatibility with select CZ P-series patterns like P-09, P-07, and P-09/P-09C/P-07/P-10 variants, though fitment varies between flush-fit and extended options. • Arex Delta Magazines: Reported by some evaluators to function in the RM1C platform due to similar internal geometry.

Hi Robert and welcome. The Rost Martin RM1C is compatible with CZ P-10 series magazines (such as the P-10 C and P-10 F/P-09 magazines), though the factory models use Rost Martin-specific base plates and followers. Cheers and stay safe!