Uploaded August 2026 | Updated September 2026, 1 week ago
Build a Gen 3 Glock® 19 clone from the frame up with Caleb from Brownells. In this Brownells Tech Tip, we use a Grit Grips Glock® 19 Gen 3 compatible frame and walk through the major components of the build, including the lower parts, locking block, Brownells Premium Glock® 19 slide, sights, red dot optic, barrel, recoil assembly, weapon light, and final function checks.
The Grit Grips frame uses Gen 3 Glock® compatible components with one notable exception: the reversible Gen 4-style magazine catch. Caleb also takes a closer look at the frame's grip texture, palm swell, undercut, thumb ledge, and other ergonomic features.
The finished build uses a Brownells Premium optic-cut slide, Brownells barrel, AmeriGlo sights, Viridian red dot, SureFire X300U, and Magpul Glock® 19 magazine. We also take a look at an Advantage Arms .22 LR conversion slide as an option for training and recreational shooting.
Always follow the component manufacturer's instructions and applicable safety procedures when assembling, maintaining, or modifying a firearm.
Chapters
00:00 Introduction
00:08 Grit Grips Gen 3 Glock® Clone Build
00:56 Grit Grips Frame Options
01:50 Gen 4-Style Reversible Magazine Catch
02:25 Gen 3 Glock® Parts Compatibility
02:47 Lower Parts Kit and Locking Block
03:43 Brownells Premium Glock® 19 Slide and Build Components
05:00 Advantage Arms .22 Conversion Kit
05:17 Frame Assembly Overview
05:47 Slide Lock and Spring
10:23 Trigger and Trigger Housing Assembly
13:03 Lubricating the Trigger Connector
14:05 Installing the Trigger Assembly
14:29 Frame Pins
16:46 Installing the Locking Block
17:38 Installing the Slide Catch
20:24 Completed Frame and .22 Conversion Slide
21:10 Building the 9mm Slide
21:50 Channel Liner
22:54 Striker Assembly
25:16 Extractor Spring Assembly
26:25 Striker Safety and Extractor
28:36 Striker and Back Plate
30:10 Installing the Sights
33:01 Fitting the Rear Sight
39:01 Installing the Red Dot
40:58 Final Assembly and Lubrication
42:07 Barrel and Recoil Spring Assembly
42:27 Lubricating the Frame and Slide
43:49 Installing the Slide
44:18 Installing the SureFire X300U
44:55 Function Check
46:14 Magazine and Slide Catch Checks
48:02 Grit Grips Frame Texture and Ergonomics
50:12 Final Thoughts
Build a Gen 3 Glock® 19 clone from the frame up with Caleb from Brownells. In this Brownells Tech Tip, we use a Grit Grips Glock® 19 Gen 3 compatible frame and walk through the major components of the build, including the lower parts, locking block, Brownells Premium Glock® 19 slide, sights, red dot optic, barrel, recoil assembly, weapon light, and final function checks.
The Grit Grips frame uses Gen 3 Glock® compatible components with one notable exception: the reversible Gen 4-style magazine catch. Caleb also takes a closer look at the frame's grip texture, palm swell, undercut, thumb ledge, and other ergonomic features.
The finished build uses a Brownells Premium optic-cut slide, Brownells barrel, AmeriGlo sights, Viridian red dot, SureFire X300U, and Magpul Glock® 19 magazine. We also take a look at an Advantage Arms .22 LR conversion slide as an option for training and recreational shooting.
Always follow the component manufacturer's instructions and applicable safety procedures when assembling, maintaining, or modifying a firearm.
Chapters
00:00 Introduction
00:08 Grit Grips Gen 3 Glock® Clone Build
00:56 Grit Grips Frame Options
01:50 Gen 4-Style Reversible Magazine Catch
02:25 Gen 3 Glock® Parts Compatibility
02:47 Lower Parts Kit and Locking Block
03:43 Brownells Premium Glock® 19 Slide and Build Components
05:00 Advantage Arms .22 Conversion Kit
05:17 Frame Assembly Overview
05:47 Slide Lock and Spring
10:23 Trigger and Trigger Housing Assembly
13:03 Lubricating the Trigger Connector
14:05 Installing the Trigger Assembly
14:29 Frame Pins
16:46 Installing the Locking Block
17:38 Installing the Slide Catch
20:24 Completed Frame and .22 Conversion Slide
21:10 Building the 9mm Slide
21:50 Channel Liner
22:54 Striker Assembly
25:16 Extractor Spring Assembly
26:25 Striker Safety and Extractor
28:36 Striker and Back Plate
30:10 Installing the Sights
33:01 Fitting the Rear Sight
39:01 Installing the Red Dot
40:58 Final Assembly and Lubrication
42:07 Barrel and Recoil Spring Assembly
42:27 Lubricating the Frame and Slide
43:49 Installing the Slide
44:18 Installing the SureFire X300U
44:55 Function Check
46:14 Magazine and Slide Catch Checks
48:02 Grit Grips Frame Texture and Ergonomics
50:12 Final Thoughts
