This guide covers Fdez Werx Springfield Echelon fitment: 4.0 Compact and 4.5 Full-Size slides, barrels, recoil spring notes, optic notes, and small-part interchange. Use it with our Echelon 4.0C vs. 4.5F slide & Cerakote guide and the charts on our FAQ compatibility page before you order so barr …

This guide covers Fdez Werx Sig Sauer P320 fitment: Comp'd Compact and Full-Size slides, barrels, recoil spring assemblies, optic notes, OEM small parts, and send-in porting. Use it with the P320 charts on our FAQ compatibility page before you order so barrel length and RSA match the slide. All Fdez …

This guide is the fitment companion to our P211 GTO / GT4 / GT5 upgrade and tuning post. It focuses on what fits which sub-model: recoil springs, the HD fat rod, sight block / comp delete, magwells, trigger, beavertail, OEM small parts, and porting services. The Sig Sauer P211 platform includes the …

This guide expands on our P365 slide and barrel compatibility post. It covers Fdez Werx P365 slides, barrels, recoil spring assemblies, grip modules / magwells / base plates, and common small parts. Use it before you order so barrel length, port style, and RSA all match the slide. All Fdez Werx P365 …

Springfield Armory's modular Central Operating Group (COG) makes the Echelon one of the most versatile striker-fired platforms on the market. Fdez Werx machines dedicated custom slides for both the 4.0" Compact and 4.5" Full-Size Echelon models so you can build an enhanced carry or duty up …

The Ruger RXM brought a modular fire-control chassis to the proven Glock G19 Gen 3 footprint. Whether you run a factory Ruger RXM or a Glock G19 Gen 3 frame, the FDEZ WERX RXM / G19 Slide and RXM Compact / G19 Gen 3 Ported Barrel are engineered together as a drop-in recoil-mitigation package. 1. Cro …