Reviews & Ratings for A3 Industries Masterpiece Arms Defender

A3 Industries Masterpiece Arms Defender - Rear Stock Adapter

$71.99 $67.99 Save $4.00

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Defender now has a brace!

by Peter N, Verified Owner from VA, United States Written on June 18, 2026

Could be a bit more aesthetically pleasing, but it works as intended.

Pros:

Works as intended

Cons:

Aesthetically unpleasing hardware

Best Used for:

brace
Stock
Attachments

Was it helpful to you? Yes | No

Perfect fit

by Sam, from VA, United States Written on May 8, 2026

Installed onto MPA defender without any issues and fit perfect.

Was it helpful to you? Yes | No

Works as advertised

by CooT, Verified Owner from TN, United States Written on April 12, 2026

Worked perfectly on my MPA defender. Easy install, fit was dead on. Holds brace firmly and tight.

Pros:

Exact Fit

Cons:

Little pricey

Best Used for:

Stock adapter MPA defender

Was it helpful to you? Yes | No

rear stock adapter

by Gordo Perez, from FL, United States Written on December 7, 2025

Fits perfectly with my mpa defender and holds the stock amazing, will be buying one again

Was it helpful to you? Yes | No

Mpa 1913 attachment

by the guy, Verified Owner from AZ, United States Written on September 26, 2025

Good and works as advertised. I bought x2 and they bother were good no defects.

Was it helpful to you? Yes | No

1913 rail adapter

by yamyam, Verified Owner from TX, United States Written on September 23, 2025

This is a must have for attaching a 1913 rail to a mpa defender series pistol. It is easy to attach and easy to remove.

Pros:

1913 rail mount
Modular Ability

Cons:

None

Best Used for:

brace
Stock
Attaching a brace or collapsible / folding stock (NFA-SBR) to a pistol.

Was it helpful to you? Yes | No

awsome addition

by yamyam, Verified Owner from TX, United States Written on September 16, 2025

This 1913 rail selection threads directly into the rear of my mpa defender pistol. This is an excellent addition to the pistol and is well worth the money.

Pros:

mount accessories
easy to install
Modular Ability

Cons:

None

Best Used for:

Attached my sling
Attaching a brace or collapsible / folding stock (NFA-SBR) to a pistol.

Was it helpful to you? Yes | No

Fit perfectly and does what it should!

by ustactical12, Verified Owner from MI, United States Written on October 3, 2024

Installed this pic rail adapter on my Defender and it works! Was able to attach my Midwest Industries folding buffer tube and brace. Screws are small but you have three attachment points.

Was it helpful to you? Yes | No

Creates adaptability

by JT, Verified Owner from OH, United States Written on September 22, 2024

Allows for a 1913 rear pic rail attachment to an MPA defender. You can fit a brace or a sling attachment. Works great.

Was it helpful to you? Yes | No

A3 Stock Adapter - MPA

by Eric, Verified Owner from AZ, United States Written on July 24, 2024

Well made product and does what it was suppose to do for my FS1913

Was it helpful to you? Yes | No

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Reviews & Ratings for A3 Industries Masterpiece Arms Defender - Rear Stock Adapter — 12 reviews — Page 1