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ATI Glock 37 Drop-In Conversion Barrel .45 GAP to .40 S&W
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$149.99
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SKU: WX2*0677622
Overview
This conversion barrel is built for Glock 37 owners who want to change from .45 GAP to .40 S&W without a gunsmithing project. It uses precision-engineered 416R stainless steel and is designed as a drop-in replacement, with the extractor and magazine follower included for the conversion. The barrel is also compatible with lead bullets and features a 1:10" right-hand twist. It is a practical option for shooters looking to adapt their pistol for a different chambering while keeping the installation straightforward.
Why Hunters Choose the Ati
Converts Glock
37 from .45 GAP to
Drop-in Fit
Requires no gunsmithing
Cnc-cut 416r
Stainless steel construction
1:10" Right-hand
Twist specification
Compatible Lead
Bullets
Key Features
- Converts Glock 37 from .45 GAP to .40 S&W
- Precision-engineered, CNC-cut 416R stainless steel construction
- 1:10" right-hand twist
- Drop-in fit; no gunsmithing required
- Compatible with lead bullets
- Includes barrel, extractor, and magazine follower
Best Used For
- Glock 37 owners wanting a .40 S&W conversion without gunsmithing
- Shooters seeking a drop-in barrel replacement for range use
- Users who want compatibility with lead bullets in their Glock 37
- Owners looking to update a .45 GAP pistol with included extractor and follower
Specifications
| Caliberconversion | Converts Glock 37 from .45 GAP to .40 S&W |
|---|---|
| Compatible With Lead Bullets | Yes |
| Country Of Origin | USA |
| Fit | Drop-in fit |
| Gunsmithing Required | No |
| Included Items | barrel, extractor, and magazine follower |
| Material | 416R stainless steel |
| Twist Rate | 1:10" right hand twist |
| Warranty | Manufacturer's Limited Lifetime Warranty |
Pros
- Converts Glock 37 from .45 GAP to .40 S&W
- Drop-in fit requires no gunsmithing
- CNC-cut 416R stainless steel construction
- 1:10" right-hand twist specification
- Compatible with lead bullets
- Includes barrel, extractor, and magazine follower
Considerations & Trade-offs
- Converts a Glock 37 from .45 GAP to .40 S&W, so it changes the pistol’s chambering rather than serving as a general-purpose barrel.
- Drop-in installation is advertised as requiring no gunsmithing, but fit is still specific to the Glock 37 platform and this conversion setup.
- The package includes a barrel, extractor, and magazine follower, so it is not just a barrel-only replacement.
- Compatible with lead bullets, but users should still verify that .40 S&W ammunition and this conversion setup match their intended use.
Suggested Comparisons
- Pistol conversion barrels
- Glock pistol barrels
- Handgun caliber conversion kits
- Aftermarket pistol components
Suggested Accessories
- Cleaning kit
- Gun case
- Magazine
- Bore brush
Frequently Asked Questions
What does this barrel convert on a Glock 37?
It converts a Glock 37 from .45 GAP to .40 S&W.
Does this conversion barrel require gunsmithing?
No. The product is described as a drop-in fit with no gunsmithing required.
What is included with the barrel?
The listing says it includes the barrel, extractor, and magazine follower.
Is this barrel compatible with lead bullets?
Yes. The product description states that it is compatible with lead bullets.
What material is the barrel made from?
The source data says it is crafted from precision-engineered, CNC-cut 416R stainless steel.