Stonebridge Gunworks Porting Service • GLOCK19CService
Glock 19C / Glock 45 Porting Service
Add Glock 19C-style porting to an eligible Glock 19 or Glock 45 factory slide and factory barrel. This Stonebridge Gunworks service is for shooters who want a clean, factory-style ported slide and barrel setup while keeping their existing Glock slide assembly.
This service is available for Gen2–Gen6 Glock 19 slides and Gen5–Gen6 Glock 45 slides when using the factory barrel and factory slide finish. Send only the slide and factory barrel for service.
Service Type
Slide and barrel porting
Compatible Glock 19
Gen2, Gen3, Gen4, Gen5, and Gen6 Glock 19
Compatible Glock 45
Gen5 and Gen6 Glock 45
Required Parts
Send only your slide and factory barrel
Finish Note
Black oxide finish on the machined cut area only
Best Add-On
Pair with optic work, trigger upgrades, and magazine extensions
Important: This is a machining service for your eligible Glock slide and factory barrel. It is not a complete pistol, slide, barrel, optic cut, trigger, magazine, or magazine extension unless those items are ordered separately.
Fitment and Service Compatibility
This porting service is designed to add Glock 19C-style porting to specific Glock 19 and Glock 45 factory slide and barrel combinations. Review the fitment notes before ordering so the correct parts are sent in for service.
| Model / Part |
Compatible? |
Notes Before Ordering |
| Gen2 Glock 19 slide and factory barrel |
Yes |
Send the slide and factory barrel only. |
| Gen3 Glock 19 slide and factory barrel |
Yes |
Send the slide and factory barrel only. |
| Gen4 Glock 19 slide and factory barrel |
Yes |
Send the slide and factory barrel only. |
| Gen5 Glock 19 slide and factory barrel |
Yes |
Send the slide and factory barrel only. |
| Gen6 Glock 19 slide and factory barrel |
Yes |
Compatible with this updated Gen6 Glock 19 porting service. Remove any optic or optic hardware before shipping unless instructed otherwise. |
| Gen5 Glock 45 slide and factory barrel |
Yes |
Compatible with this Glock 45 / 19C-style porting service. |
| Gen6 Glock 45 slide and factory barrel |
Yes |
Compatible with this updated Gen6 Glock 45 porting service. Remove any optic or optic hardware before shipping unless instructed otherwise. |
| Aftermarket barrel |
No |
This service is listed for the factory barrel only. |
| Non-factory slide finish or refinished slide |
Not for this listing |
This service is for factory finish only. Contact Stonebridge Gunworks before ordering if your slide has been refinished. |
| Complete pistol / frame |
Do not send by default |
Send only the slide and factory barrel for this service unless Stonebridge Gunworks specifically instructs otherwise. |
What This Glock Porting Service Includes
- Glock 19C-style porting: Slide and barrel are cut for a factory-style Glock 19C porting layout.
- Slide and barrel service: This service is performed on your eligible Glock slide and factory barrel.
- Gen2–Gen6 Glock 19 coverage: Supports compatible factory Glock 19 slide and barrel combinations from Gen2 through Gen6.
- Gen5–Gen6 Glock 45 coverage: Supports compatible factory Glock 45 slide and barrel combinations from Gen5 and Gen6.
- Black oxide cut-area finish: The machined area of the slide receives black oxide finish. This is not a full slide refinish.
- Factory barrel requirement: This service is listed for factory barrels only.
- Factory finish requirement: This service is listed for factory-finish slides only.
Ported pistol note: Ported pistol setups vent gas upward through the barrel and slide ports. Test your completed setup with your selected ammunition, sights, optic, and use case before relying on it for carry, duty, competition, training, or defensive use.
Gen6 Glock 19 and Gen6 Glock 45 Notes
Gen6 Glock 19 and Gen6 Glock 45 models are factory optic-ready. If your Gen6 slide already has the optic mounting system you want, you may not need a separate optic cut. If you are building a custom red dot setup, adding a specific optic cut, or combining multiple slide services, review the Glock optic cut service before checkout.
Gen6 ordering tip: If you are sending a Gen6 slide, remove the optic, optic plate, loose mounting hardware, and accessories before shipping unless Stonebridge Gunworks specifically instructs you to include them.
How to Order This Porting Service
1
Confirm Your Model
Make sure your slide and factory barrel match this service: Gen2–Gen6 Glock 19 or Gen5–Gen6 Glock 45.
2
Select Return Shipping
Choose your return shipping and carrier insurance options from the product options above before adding the service to your cart.
3
Add Related Services
If you want red dot work, add the Glock optic cut service to the same order so the porting and optic setup can be planned together.
4
Ship Slide and Barrel
After checkout, send only the slide and factory barrel for this porting service. Include your order number in the package.
Shipping help: Before shipping, read the Stonebridge Gunworks slide milling FAQ for current shipping instructions, lead-time notes, and packaging guidance.
Read the Slide Milling FAQ.
Glock 19C-style porting works best as part of a complete build plan. If you are already sending your Glock 19 or Glock 45 slide in for machining, these supporting upgrades can help finish the setup for red dot use, practical shooting, range training, or a high-round-count Glock build.
Best Same-Order Add-On
Glock Direct Optic Cut
Add a direct-milled optic cut while the slide is already in for service. This is especially useful for Gen2–Gen5 Glock slides that are not already set up for the optic you want to run.
Gen6 Glock 19 and Gen6 Glock 45 slides are factory optic-ready, so review your optic plan before adding a separate optic cut.
- RMR / SRO / Holosun C-Series / Holosun Comp
- EPS Full / EPS Carry / Holosun K
- Vortex Defender ST / XL / DeltaPoint Pro
- Aimpoint ACRO and Holosun 509T options
View Glock Optic Cut Service
Trigger Upgrade
GLOCK Performance Trigger
A strong supporting upgrade for compatible Glock 19 and Glock 45 shooters who want an enhanced factory Glock trigger feel with a flat-faced shoe and GLOCK Safe Action system compatibility.
This is most relevant for compatible Gen4 and Gen5 9mm Glock builds. Gen6 buyers should confirm accessory trigger compatibility before ordering.
- Factory GLOCK accessory trigger
- Pairs well with optic-cut and ported Glock builds
- Review model compatibility on the product page
Shop GLOCK Performance Trigger
Glock 19 Magazines
Glock 19/26 Magazine Extension
For Glock 19 magazine users, the Henning Glock 19/26 Plus 5 magazine extension is the more model-specific magazine extension option. It is a useful add-on for range and practical shooting setups.
- Designed for Glock 19 and Glock 26 magazine setups
- Glock 19 magazines increase from 15 to 20 rounds
- Check current availability before planning your build around it
Check Glock 19/26 Extension
Glock 45 / Full-Size Mags
Glock 17/34/19X/45 Magazine Extension
For Glock 45, G19X, Glock 17, and Glock 34 factory 9mm magazine bodies, the Henning H141-GS9 extension is a strong supporting upgrade for practical shooting and higher-capacity range setups.
- Fits Glock G17, G34, G19X, and G45 factory 9mm magazines
- Factory follower setup for 22–23 round use
- MBX option for 24-round practical shooting use
Shop G17/G34/G19X/G45 Extension
Build Path: Porting, Optics, Trigger, and Magazines
Carry / Duty-Style Glock 19 or Glock 45
Start with the porting service and confirm whether your slide already supports your chosen optic. Keep the magazine and spring setup conservative, test the pistol thoroughly, and verify the setup with your chosen ammunition.
Review Glock optic cut options
Range / Training Glock Build
Combine 19C-style porting with a red dot setup, backup iron sights if desired, and a trigger setup that matches your training goals and model compatibility.
Shop the GLOCK Performance Trigger
Practical Shooting / USPSA-Style Setup
For a Glock 45 or full-size magazine setup, pair the ported slide with a large-window red dot, compatible trigger upgrade, and a Henning magazine extension.
Shop Glock 45 magazine extensions
Before You Ship Your Slide and Barrel
- Place your order before shipping parts to Stonebridge Gunworks.
- Include your order number in the package.
- Send only the slide and factory barrel for this porting service.
- Do not send the frame, complete pistol, magazine, ammunition, or extra accessories unless Stonebridge Gunworks specifically instructs you to do so.
- Remove optics, optic plates, and loose optic hardware before shipping unless instructed otherwise.
- Confirm your slide has factory finish and your barrel is a factory Glock barrel.
- Add the Glock optic cut service to the same order if you want porting and optic milling handled together.
- Test the returned slide/barrel setup with your selected ammunition before relying on it for carry, duty, training, competition, or defensive use.
Frequently Asked Questions
What Glock models does this porting service fit?
This service is for Gen2–Gen6 Glock 19 slides and Gen5–Gen6 Glock 45 slides with the factory barrel and factory slide finish.
Do I send the whole pistol?
No. For this service, send only your slide and factory barrel unless Stonebridge Gunworks specifically instructs you otherwise.
Is the barrel included?
No. This is a service performed on your eligible factory barrel and slide. A new barrel is not included.
Is an optic cut included with this porting service?
No. The optic cut is a separate service. If you want red dot work, add the Glock optic cut service to the same order.
Should I add an optic cut for a Gen6 Glock 19 or Gen6 Glock 45?
Gen6 Glock 19 and Gen6 Glock 45 models are factory optic-ready. Add the Glock optic cut service only if you need additional optic-specific slide work or are building a custom setup that requires it.
What finish is applied after the porting cut?
The machined cut area of the slide receives black oxide finish. This service does not include a full slide refinish.
Can this be done on an aftermarket barrel?
No. This listing is for factory barrels only.
Which magazine extension should I choose?
Glock 19 magazine users should check the Glock 19/26 magazine extension option. Glock 45 users running full-size Glock magazines should look at the Henning Glock 17/34/19X/45 magazine extension.
Is Stonebridge Gunworks affiliated with GLOCK?
GLOCK® is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither Stonebridge Gunworks 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's trademarks is for descriptive purposes only. GLOCK, Inc. does not warrant or endorse any products sold by Stonebridge Gunworks LLC.
