CSRG

CSRG — Competitive Shooting Resource Group

CSRG (Competitive Shooting Resource Group) is a competition-focused accessories manufacturer making magazine follower and spring kits, optic mounting plates, and related gear for the most popular competition pistol platforms. CSRG products are designed by competitors for competitors — built to maximize capacity, reliability, and performance at USPSA, IDPA, and IPSC matches. Ben Stoeger Pro Shop is a stocking CSRG dealer.

CSRG Competition Magazine Follower & Spring Kits

CSRG's flagship product line. Drop-in follower and spring kits that replace the factory components in your competition magazines to maximize capacity. All CSRG kits use springs made by ISMI — the competition standard for magazine springs. Three configurations available:

  • Gen 2 Multi-Platform Kit — compatible with Glock, CZ, Canik, SIG, Beretta, and more. Achieves 23/24+1 capacity with 140mm magazine extensions. Available with 11 or 13 coil springs (13 coil improves longevity but may slightly reduce max capacity). Gen 2 features improved follower geometry over the original.
  • Mec-Gar Glock Kit — specifically designed for Mec-Gar steel Glock magazine tubes (not compatible with OEM Glock tubes). Achieves 24/25+1 capacity with Springer Precision 140mm extensions. 11 coil spring only — 13 coil not recommended for Mec-Gar tubes due to spring pressure.
  • 1911 Double Stack / 2011 Kit — for Atlas Gunworks, Check-Mate, Staccato, and SVI 2011 magazine tubes. Achieves 29/30+1 capacity with 171.25mm Open division magazines. Not compatible with MBX Extreme tubes.

Important: All CSRG competition followers are designed for range and competition use only — not for duty or self-defense. Competition followers do NOT lock the slide open on the last round by design, to maximize capacity. Break in magazines by loading and unloading fully at least three times before match use. An UpLULA loader is strongly recommended to achieve maximum advertised capacity.

CSRG MFP-MOS — Multi-Footprint Optic Plate for Glock MOS

CSRG's newest product — the CSRG Multi-Footprint Plate for Glock MOS accepts both Trijicon RMR and Leupold DeltaPoint Pro footprints in a single plate, eliminating the need to own multiple plates when switching optics. Precision-machined for a secure, zero-shift fit in Glock MOS slides.

Looking for other optic adapter plates? See our C&H Precision Weapons (CHPWS) and Calculated Kinetics DOGTAG selections for additional platform and optic