Masterpiece Arms Defender 30K 9mm Pistol
The Masterpiece Arms Defender 30K 9mm Pistol is a compact 9mm platform featuring a steel upper receiver, aluminum lower receiver, 4.5-inch threaded barrel, non-reciprocating charging handle, and an integrated side-folder hinge with buffer tube adapter. The 30K is designed around Glock 17 and Glock 19-style magazine compatibility and is supplied with a magazine configuration specified by the manufacturer.
Defender 30K Features
- 9mm caliber
- Steel upper receiver
- Aluminum lower receiver
- 4.5-inch threaded barrel
- 1/2 x 28 barrel thread specification
- Thread protector included
- Non-reciprocating charging handle
- Side-folder hinge
- Buffer tube adapter
- Glock 17 and Glock 19-style magazine compatibility
- Rise Armament fire control group with anti-walk pins
- B5 Systems P-22 grip
- Lifetime warranty as specified by the manufacturer
Compact 9mm Configuration
The Defender 30K for sale is configured with a 4.5-inch barrel and an overall length of 12.52 inches. Its steel upper and aluminum lower receiver combine different materials within the compact platform, while the listed pistol weight is 67.05 ounces before adding the magazine or rear stock or brace.
Magazine Compatibility
The supplied specifications identify compatibility with Glock 19, Glock 17, or larger magazines. Magazine capacity therefore depends on the magazine used. The supplied configuration is listed with a choice of either a 34-round Amend2 magazine or a 17-round Magpul magazine.
Fire Control and Charging System
The Masterpiece Arms Defender 30K 9mm Pistol for sale includes a Rise Armament fire control group with anti-walk pins and a non-reciprocating charging handle. These components form part of the manufacturer’s listed configuration.
Side-Folder and Buffer Tube Adapter
The pistol includes a 30K side-folder hinge and buffer tube adapter. The supplied specification lists the buffer tube adapter thread pitch as 1-3/16 x 16. Compatibility with any additional rear-support component should be verified before installation.
Masterpiece Arms Defender 30K Specifications
| Specification | Details |
|---|---|
| Manufacturer | Masterpiece Arms |
| Model | Defender 30K |
| Caliber | 9mm |
| Platform | Pistol |
| Upper Receiver | Steel |
| Lower Receiver | Aluminum |
| Barrel Length | 4.5 inches |
| Barrel Thread | 1/2 x 28 |
| Thread Protector | Included |
| Overall Length | 12.52 inches |
| Overall Height | 7.6 inches, excluding magazine |
| Weight | 67.05 oz., excluding magazine and rear stock or brace |
| Charging Handle | Non-Reciprocating |
| Magazine Type | Glock 19, Glock 17, or larger |
| Magazine Capacity | Depends on Magazine |
| Buffer Tube Adapter Thread Pitch | 1-3/16 x 16 |
| Fire Control Group | Rise Armament with Anti-Walk Pins |
| Grip | B5 Systems P-22 |
Magazine Options
The supplied product information lists the following magazine options:
- 34-round Amend2 magazine
- 17-round Magpul magazine
Magazine availability and included configuration should be verified before purchase.
Warranty Information
The supplied product information states that the Defender 30K is backed by a lifetime warranty. Refer to the manufacturer’s current warranty documentation for applicable terms, conditions, and limitations.
Important Product Information
Specifications, included components, magazine configuration, and availability may vary by production configuration. Verify the exact product specifications and applicable legal requirements before completing a purchase.















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