UPGRADED Dual Picatinny Rail Adapter for MPA Defender–Mount Optic & Stock/Brace For Sale

NEW VERSION 4.0UPGRADED with Aluminum Back rail

This new Version has been completely redesigned from scratch! Thicker, larger and new industrial Grade Glass Fiber reinforced Nylon polymer, for better stiffness and resistance. Andin addition,to make it even more durable we added flanged nuts .

This is really a tough piece of equipment, this is not PLA, PETG or even regular Nylon, this is an Industrial Grade polymer, printed on top of the line brand new machines!

And for the month of September, version 4, will remain at the same price as Version 3, after that it will be at the regular price of $44.95.

If you have already purchased Version 3, or an earlier version, contact us, we will give you a great upgrade deal (ending September 30th, 2026)!

Upgrade Your Setup: Mount Both an Optic and a Stock/Brace Simultaneously!

Maximize the tactical utility of your MPA Defender with this custom dual-action Picatinny rail adapter. Engineered specifically to solve the clearance and mounting limitations of the factory rear plate, this heavy-duty adapter gives you two independent Picatinny sections. Now you can run your choice of top-mounted red dot/optic alongside a rear-mounted brace or stock setup at the exact same time.

Key Features:

• Dual-Zone Functionality: Features a top rail section optimized for optics/red dots and a rear section (with Aluminum rail) designed for stocks or stabilizing braces.

• Complete Hardware Kit Included: Comes ready to install with 5 properly sized mounting screws, 2 nuts and an allen wrench for a secure, worry-free fit.

• High Temperature Resistance: Built tough to handle demanding conditions. Engineered to resist temperatures all the way up to437°F(225°C)without warping or losing structural integrity.

• Rock-Solid Fitment: Designed for a tight, zero-play interface with the MPA Defender receiver to ensure your optics hold zero and your stock remains stable.

• 1-Year Guarantee: Built to last. This part comes with a 1-year guarantee—if it breaks or fails under normal use, it will be replaced for free, just pay for shipping and handling.

• (1) Dual Picatinny Rail Adaptermade ofIndustrial Grade Glass Fiber reinforcedNylon Polymer(PA6-GF).

• (1) 1913 Picatinny Back Rail Section made of Lightweight Black Aluminum.

• (1) Full Set of Carbon Steel Mounting Carbon Steel Hardware (5 Screws & 2 Nuts) and 1 allen wrench.

Note: Firearm, optic and stock/brace shown in demonstration photos are for illustration purposes only and are NOT included in this sale.

PLEASE NOTE: The MPA Defender, optic, and brace shown in the listing images are for demonstration purposes only and are NOT included in this sale. You are purchasing the adapter and mounting hardware only.