MA-40 40SW 4″ Micro ARP – SBR Ready

AR-40 S&W

Moriarti MA-40 40SW 4″ Micro ARP Pistol – SBR Ready | Choose Color

The Moriarti MA-40 40SW 4″ Micro ARP Pistol brings .40-caliber performance to an ultra-compact AR-style platform. Part of Moriarti’s Micro and SBR Ready lineup, the MA-40 combines a 4″ 4150 CMV barrel, slick-side billet upper, compact M-LOK handguard, Glock-style .40 caliber magazine compatibility, and Non-LRBHO blowback operation in a purpose-built Micro configuration.

Built for shooters looking beyond the typical 9MM PCC, the MA-40 delivers the familiar controls and modularity of an AR-style platform while using the 40SW / .40 S&W cartridge.

The pistol is equipped with a Mil-Spec carbine buffer tube and 8 oz PCC buffer, with no stock or brace included. Its compact configuration also makes the MA-40 SBR Ready for customers who later choose to configure the firearm as an SBR after receiving the required NFA approval.

Available in multiple Moriarti finishes, the MA-40 Micro gives customers the ability to choose their color while retaining the same compact 40SW platform.

Key Features

• 40SW / .40 S&W chambering

• Ultra-compact 4″ Micro ARP configuration

• 4″ 4150 CMV barrel

• 1:16 RH twist

• 5/8×24 muzzle thread

• Compact M-LOK handguard

• Slick-side billet upper receiver

• Ramped AR-40 bolt carrier group

• Glock-style .40 caliber magazine compatibility

• Non-LRBHO configuration

• Direct-blowback operating system

• 8 oz PCC buffer

• Mil-Spec carbine buffer tube

• No stock or brace included

• SBR Ready configuration

• Familiar AR-style controls and ergonomics

• Choose from available Moriarti colors

• Complete firearm – FFL transfer required

Specifications

Package Includes

• Moriarti MA-40 40SW 4″ Micro ARP Pistol

• Magazine where permitted and specified with the selected configuration

Frequently Asked Questions

What is the Moriarti MA-40 Micro?
The MA-40 Micro is Moriarti’s ultra-compact AR-style pistol chambered in 40SW / .40 S&W. It combines a 4″ barrel with a compact M-LOK handguard, slick-side upper and Glock-style .40 caliber magazine compatibility.

Is 40SW the same as .40 S&W?
Yes. 40SW and .40 S&W refer to the same cartridge. Moriarti uses 40SW throughout much of its product naming while also identifying the conventional .40 S&W designation to make the caliber easy to recognize and search.

What does SBR Ready mean?
SBR Ready identifies the compact configuration as suitable for customers who may later choose to configure the firearm as a short-barreled rifle after obtaining any required NFA approval. The firearm is sold in the configuration described on this page and does not include a stock.

Does the MA-40 Micro include a stock or pistol brace?
No. This configuration includes a Mil-Spec carbine buffer tube and does not include a stock or brace.

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

What magazines does the MA-40 use?
The MA-40 is designed for compatible Glock-style .40 caliber magazines. Magazine capacity and availability may vary based on applicable restrictions.

What is the barrel specification?
The MA-40 Micro uses a 4″ 4150 CMV barrel with a 1:16 RH twist and 5/8×24 muzzle thread.

Is the MA-40 Micro a complete firearm?
Yes. This is a complete firearm and must ship to an FFL for transfer.

Can I choose the color of my MA-40 Micro?
Yes. This model is available in multiple Moriarti color options. Select your available finish before adding the firearm to your cart.

Product Image Notice

Images may not be the exact representation of the product.

FFL TRANSFER REQUIRED.