MA-40 40SW 4″ Micro ARP Pistol – Tucked Flash Can | SBA5

AR-40 S&W

Moriarti MA-40 40SW 4″ Micro ARP Pistol – Tucked Flash Can | SBA5 | Non-LRBHO

The Moriarti MA-40 40SW 4″ Micro ARP Pistol brings Moriarti’s modern Micro ARP styling to the 40SW / .40 S&W platform. Built around an ultra-compact 4″ 4150 CMV barrel, this MA-40 pairs a compact free-float M-LOK handguard with a tucked flash can for the distinctive profile found across Moriarti’s newest Micro lineup.

The compact upper is paired with a Moriarti Glock-style billet PCC lower, .40 S&W hybrid bolt, 8 oz PCC buffer, Mil-Spec receiver extension, and SBA5 adjustable pistol brace. The direct-blowback system uses a streamlined Non-LRBHO configuration and accepts compatible Glock-style .40 caliber magazines.

Finished in anodized black, the MA-40 Micro is designed as the 40SW counterpart to Moriarti’s MA-9 Micro ARP, retaining a 4″ barrel specifically selected for the .40 S&W platform. The SBA5 brace and tucked front-end configuration give this model its own identity within the MA-40 family.

For shooters searching for a 40SW Micro ARP, .40 S&W AR pistol, compact AR-40, or Glock-style 40 caliber PCC, the MA-40 Micro delivers a modern Moriarti configuration built around one of the most established pistol calibers.

Key Features

• 40SW / .40 S&W chambering

• Ultra-compact 4″ Micro ARP configuration

• 4″ 4150 CMV heavy-profile barrel

• Black nitride barrel finish

• 5/8×24 muzzle thread

• Tucked flash can configuration

• Compact free-float M-LOK handguard

• Billet PCC upper receiver

• .40 S&W hybrid bolt

• Standard charging handle

• Direct-blowback operating system

• Non-LRBHO

• Moriarti Glock-style billet PCC lower

• Glock-style .40 caliber magazine compatibility

• 8 oz PCC buffer

• Mil-Spec receiver extension

• SBA5 adjustable pistol brace

• Anodized black finish

• Sights and optics not included

• Complete firearm – FFL transfer required

Specifications

Package Includes

• Moriarti MA-40 40SW 4″ Micro ARP complete pistol

• 4″ 4150 CMV black-nitride barrel

• Compact free-float M-LOK handguard

• Tucked flash can

• Billet PCC upper receiver

• .40 S&W hybrid bolt

• Standard charging handle

• Moriarti Glock-style billet PCC lower

• 8 oz PCC buffer

• Mil-Spec receiver extension

• SBA5 adjustable pistol brace

Magazine, sights and optics are not included.

Frequently Asked Questions

What makes this MA-40 different from the other MA-40 Micro configurations?
This model combines a 4″ 40SW barrel, tucked flash can, compact M-LOK handguard, anodized black finish, and SBA5 adjustable pistol brace, giving it a distinct configuration within the MA-40 Micro family.

Is this the 40SW counterpart to the MA-9 Micro ARP?
Yes. This MA-40 follows the compact tucked-front-end concept of Moriarti’s MA-9 Micro while using a 4″ barrel specifically for the 40SW / .40 S&W platform.

Does the MA-40 use Glock-style magazines?
Yes. The MA-40 is designed for compatible Glock-style .40 S&W magazines. A magazine is not included.

Does this MA-40 have last-round bolt hold open?
No. This model uses a Non-LRBHO configuration.

What buffer does the MA-40 use?
The MA-40 uses an 8 oz PCC buffer with a Mil-Spec receiver extension.

What is the muzzle thread?
The 4″ barrel is threaded 5/8×24.

Does this MA-40 include an SBA5 pistol brace?
Yes. This configuration includes an SBA5 adjustable pistol brace.

Is an FFL transfer required?
Yes. This is a complete firearm and must be shipped to a licensed FFL dealer for transfer.

Product Image Notice

Images may not be the exact representation of the product.

FFL Transfer

This firearm must ship to a licensed Federal Firearms Licensee (FFL) for transfer. Please have your receiving dealer provide its FFL information and reference your Moriarti order or invoice number.