The Best Glock™ Clone For Builders

Build a custom Glock®-style pistol using SCT frames in this detailed Brownells Tech Tip with Caleb. In this video, Caleb walks through assembling a Glock® clone starting with an SCT Glock® 17-size frame and installing upgraded components including an Apex trigger kit, Brownells premium slide, Agency Arms threaded barrel, Ameriglo sights, and a Trijicon RMR optic. Along the way, he explains how each component works, shows the correct order for installing Glock® frame parts, and demonstrates how to assemble the slide, mount sights, and perform a proper function check. SCT frames offer one of the best values for building a Glock®-compatible pistol. They accept standard Glock® magazines and most aftermarket Glock® components, making them a versatile platform for custom builds. Caleb also shows additional options including compact builds, slimline carry frames, and even converting the pistol to a .22 LR training setup using an Advantage Arms conversion kit. If you are planning a Glock® clone build or want to learn how Glock® pistols are assembled, this bench-side walkthrough covers every step from frame assembly to final setup. Chapters 00:08 Introduction to SCT Glock® clone frames 00:52 Overview of the SCT 17-size frame 01:22 Magazine compatibility and magwell options 01:57 Slimline 43X-size SCT frame option 02:28 Parts kits and build components overview 03:07 Apex trigger kit and upgraded controls 03:39 Brownells premium Glock® slide overview 05:00 RMR optic mounting screws explained 05:22 Installing the magazine catch and spring 09:23 Assembling the fire control group 11:25 Installing the Apex connector and lubrication points 13:08 Installing the slide lock and spring 15:51 Installing the trigger assembly 16:24 Installing the locking block 17:11 Understanding the Glock® frame pins 18:34 Installing the first pin and slide catch 21:02 Final frame assembly and checks 22:46 Slide components overview 23:44 Installing the striker assembly 26:55 Installing the channel liner 27:49 Extractor spring assembly and components 30:01 Installing the safety plunger and extractor 31:21 Installing the striker and slide back plate 33:18 Installing the front sight 35:39 Fitting and installing the rear sight 41:04 Installing the barrel and recoil spring 42:32 Installing the slide onto the frame 43:00 Function check and trigger reset test 44:11 Installing the Trijicon RMR optic 46:18 Adding a suppressor and weapon light 47:42 Optional .22 LR conversion with Advantage Arms 48:59 Final thoughts on SCT frame builds In this video: SCT Glock® clone frame overview Apex trigger kit installation Brownells premium Glock® slide assembly Agency Arms threaded barrel setup Ameriglo sight installation Trijicon RMR mounting Suppressor-ready Glock® build setup Advantage Arms .22 LR conversion option Weapon light installation Complete frame and slide function check