Glock 19 Rail-Mounted Compensator

Carefully read and follow the instructions below to avoid damaging your compensator and firearm. Failure to follow these instructions may result in injury to the shooter and damage to the compensator and firearm.  As the Customer, you acknowledge and agree that it is solely your responsibility for complying with these procedures and checking your compensator regularly. We are not responsible for damage to the compensator or firearm. 

Upgrading your handgun with a compensator requires a higher level of maintenance and care. Ensuring that it is installed correctly and checked frequently is critical for proper function and safety. 

Results may vary depending on the handler. Vantage Point Armory is not in any way responsible for the misuse of firearms or firearm parts/accessories or the results of such misuse. We highly recommend gun owners inspect parts and accessories frequently. This will help mitigate the possibility of accidents and malfunctions.

*The Vantage Point Compensator is intended for use on OEM pistols only - VPA does not guarantee function or reliability with aftermarket or modified guns

DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.

DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks registered by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Vantage Point Armory, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. Components and parts that do not specifically have GLOCK listed as the manufacturer are made by their respective company. Such parts may be intended for use with GLOCK components but are not produced by GLOCK, Inc.. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.

Step-by-Step Instructions for Assembling the Glock 19 Rail-Mounted Compensator (video instructions linked here): 

Before you begin, ensure you have the following:

• VP Armory Glock 19 Rail-Mounted Compensator
• Trapdoor Piece (included with Compensator)
• Two Set Screws (included with Compensator)
• Torque Wrench with 3/32” Allen Key (recommended) or 3/32” Allen Wrench
• Glock 17 Handgun
• Loctite
• All screws must have a medium-strength, medium-to-high temperature threadlocker applied in accordance with their manufacturer's instructions. We recommend a small application of Green Loctite 290 on each screw. Blue Loctite 246, 242, or 248, are also acceptable if you intend to remove the compensator more regularly, but these products are more likely to loosen under an aggressive firing schedule.

Installation Steps

1. Prepare the Firearm

• Ensure your firearm is completely unloaded and safe to handle.
• Remove the magazine and check the chamber.
• Make sure your rail is clean and free of debris.

2. Position the Compensator

• Take your Glock 19 rail-mounted compensator.
• Slide the comp onto the frame until the rail notch is exposed.
• Align the compensator so the trap door system can lock into place.

3. Insert the Trap Door

• Slide the trap door into the rail notch until it seats fully.
• Make sure everything is aligned straight before tightening screws.

4. Secure the Screws

• Apply a small amount of Loctite to the screws before tightening for added security during firing.
• Note: The use of Loctite is essential to ensure the screws do not back out over time with firing.
• Insert the torque screws into the compensator.
• Carefully thread the screws to avoid cross-threading (this is critical to prevent damage).
• Torque both screws evenly to 10 inch-pounds.

5. Verify Fitment

• Check that the compensator sits snug on the frame with no wiggle.
• You should see a small clearance (about .020") between the comp and the front of the slide — not a seal, but a tight, close fit.

6. Final Safety Check

• Confirm both screws are secure at 10 in-lbs.
• Visually inspect alignment.
• Cycle the slide to ensure there’s no interference with operation.

7. Allow For Drying Time:

• Allow the assembly to dry for at least a day to ensure the Loctite sets properly.
• Witness mark all screws with an oil-based paint pen for future reference to detect any loosening.
• The first time the firearm is fired with the compensator installed, the screws should be checked after the first few shots to ensure it has been installed properly.
• Regularly check your witness marks to ensure that the screws have not loosened. If they loosen during firing, re-torque them immediately.
• If any of the attachment screws become damaged or loose, do not attempt to fire the handgun with the compensator attached. You will need to replace the screw.

Important Notes

• Do not cross-thread: Start screws gently and verify straight alignment before tightening.
• Torque to 10 in-lbs: Over-tightening can damage the system.
• Confirm all screws are secure and flush with the compensator surface.
• Ensure there is no movement or wiggle between the compensator and the firearm.

••Check regularly: Verify torque and fit after your first range session and periodically during use.

• Alignment is Key: Proper alignment of the screws with the lock bars is essential for secure installation.
• Use Loctite: For enhanced security, apply Loctite to the screws to prevent loosening during use.
• Check Gap Clearance: Ensure there is a gap between the slide and the compensator to prevent any interference with the slide's operation.

Upgrading your handgun with a compensator requires a higher level of maintenance and care. Ensuring that it is installed correctly and checked frequently is critical for proper function and safety. 

How to Clean Residue from Your Firearm & Compensator

Residue buildup is completely normal—it’s just carbon and fouling left behind from firing. Over time, it can collect on your firearm and compensator, especially around muzzle devices. The good news? It’s easy to clean off, and it doesn’t damage or remove your Cerakote finish when handled properly.

Important note: We’ve seen cases where people try to scrub off the residue too aggressively, which actually ends up polishing the carbon rather than removing it. This can give the illusion that the Cerakote is coming off—but it’s really just shiny residue left behind.

Regular maintenance keeps your setup performing smoothly and helps prolong the life of your gear. In this guide, we’ll walk you through how to properly clean that buildup and get your firearm looking and functioning like it should.

Click here to view our recommendation on how to clean residue from your firearm and compensator. 

Orders are typically shipped within
one to two business days via USPS Priority Mail — this means your order should
be delivered within three to five business days!

We also offer expedited shipping options,
as well as international shipping. 

Free Standard Shipping on U.S. orders $150 or more.