Who We Are
Cornerstone Tactical Supply is an aftermarket trigger components and pistol parts supplier based in Grand. We specialize in performance trigger components, sear kits, reset springs, and drop-in upgrade parts for common handgun platforms — M&P 2.0, Shield, Glock, FN 509, CZ Shadow, Springfield Hellcat, Sig, and more.
What We Do
We curate a catalog of proven aftermarket parts, test them on our own pistols before listing, and ship directly to shooters, gunsmiths, and small FFL dealers across the United States. We are not the manufacturer — we are a specialist retailer that knows this niche well.
Compatibility Matrix
Every product page lists exact compatibility (platform, generation, barrel length where applicable). When in doubt, email us your firearm’s exact model and serial-number range — we will confirm fit before you buy.
Support & Install Help
Most of our kits are drop-in. Some require gunsmithing skills (especially flat-faced forward-set sears). We provide install notes on the product page and respond to email within one business day if you hit a snag.
Shipping From Grand
Orders placed before 2:00 PM Eastern typically ship same or next business day. See Shipping Policy.
Contact
[email protected] — Cornerstone Tactical Supply, Grand.