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  • BPA-3AX
  • BPA-3AXF

MBA-3 Style Buttplate Assembly – 3 Axis – Medium Pad 85 Duro

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MBA-3 Style Buttplate Assembly – 3 Axis – Medium Pad 85 Duro

Need 3-Axis adjustment for your MBA-1, MBA-2 or MBA-4 buttstock? This complete kit contains everything you need to add the 3-Axis adjustment, length-of-pull, vertical and horizontal adjustment of the MBA-3 to an MBA-1, MBA-2 or MBA-4.

The 3-Axis kit replaces the Length-of-Pull buttplate on the MBA-1 or adds the 3-Axis adjustability to the MBA-2 or MBA-4.

Clear

$49.95

This kit allows you to add the 3-Axis butt plate to an MBA-1, MBA-2 or MBA-4. All parts included (will have extra parts to accommodate both MBA-1/MBA-2 and MBA-4 butt stock bodies). The MBA-3 is already configured with the 3-Axis Butt plate Assembly as well as Adjustable Cheek Riser.

Includes:

Parts:

1 3-Axis Recoil Pad,

1 Combed butt plate Frame with insert (tongue)

2 Side plates (dual recess works on MBA-1 and 2; single recess works on MBA-3 and 4)

1 A1 adapter plate

Hardware:

2 Butt pad screws

3 Side plate screws (two longer ones work with MBA-1 and 2; shorter replaces the longer one on top plate for the MBA-3 and 4)

2 Side plate nuts

1 Screw for A1 adapter

1 A1 screw

1 Thumb Screw

1 Star Washer

1 Thumbscrew backing plate

Specifications:

4.5 oz. in total

 

SKU: BPA-3AXB – Black

SKU: BPA-3AXF – Flat Dark Earth

Color

,

Weight Ounce

7

Weight lbs

.44

Application

MBA-1, MBA-2, MBA-4

Additional Length-of-Pull

1 1/16″

Buttstock Type

MBA-1, MBA-2, MBA-3, MBA-4

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How to install a MBA 3-Axis butt plate on your MBA-1, MBA-2 or MBA-4.

The Modular Buttstock Assembly family of butt stocks are designed to be configurable to suit your specific needs. If you currently own an MBA-1 butt stock with standard butt plate, an MBA-2 butt stock or an MBA-4 butt stock and want add or swap the 3-Axis butt plate you will need this kit.

The kit includes the parts for all the variations, your application will not require all of the parts.

Included in the kit:

    • 1) 3-Axis Recoil Pad,
    • 1) Combed Butt plate Frame with insert (tongue)
    • 2) Side Plates (the side plate with two nut capture recesses works on MBA-1 and 2; side plate with a single nut capture recess works on MBA-3 and 4)
    • 1) Adapter Plate
  • Hardware:
    • 2) Butt pad Screws
    • 3) Side Plate Screws (two longer ones work with MBA-1 and 2; shorter replaces the longer one on top plate for the MBA-3 and 4)
    • 2) Side Plate Nuts
    • 1) Screw for A2 Adapter (for use with MBA-2)
    • 1) Short A2 Screw (for use with MBA-2)
    • 1) Thumb Screw
    • 1) Star Washer
    • 1) Thumb Screw backing plate

Choose from the following current configurations:

MBA-1 Butt stock with standard butt plate:

  • Unscrew the thumb screw completely while retaining the thumb screw backing plate.
  • Remove the standard butt plate by pulling rearward. Set aside.
  • Slide the 3-Axis butt plate into the same slot vacated by the standard butt plate.
  • While holding the thumb screw backing plate on the back of the butt plate, screw the thumb screw until finger tight.

MBA-2 Butt stock with butt pad:

  1. Using a 3/32” Allen wrench (included with the MBA), remove the two screws securing the butt pad. Save for future use.
  2. If the MBA-2 is currently attached to a buffer tube, peel back the butt pad from the fixed butt plate frame exposing the A2 screw. Using a flat blade screw driver remove the A2 screw and save the screw and fixed frame for future use.
  3. Install the A2 adapter plate and secure it with the short cap head screw using a 3/32” Allen wrench.
  4. Using the short A2 screw attach the MBA-2 to the buffer tube with a flat blade screw driver.
  5. Slide the 3-Axis butt plate into the slot at the rear of the MBA-2 with the long side facing upward so that the butt plate is flush when fully seated. 
  6. Using the dual nut recess side-plate, place the side plate on the right-hand side of the MBA-2 so that the slot in the butt plate frame aligns with the thumb screw hole in the side plate. 
  7. Insert the side plate nuts into the side plate and hold in position. Using the 2 long side-plate screws, insert the side plate screws from the left side of the butt stock through the corresponding holes in the frame and the holes of the side plate, and tighten into the side plate nuts using the 3/32” Allen wrench.
  8. Hold the thumb screw backing plate on the left side of the butt stock and place the star washer on the thumb screw and finger tighten the thumb screw. 

MBA-4 Butt stock with butt pad:

  1. Using a 3/32” Allen wrench (included with the MBA), remove the two screws securing the butt pad. Save the screws, butt pad and fixed frame for future use.
  2. Slide the 3-Axis butt plate into the slot at the rear of the MBA-4 with the long side facing upward so that the butt plate is flush when fully seated. 
  3. Using the single nut capture recess side-plate, place the side plate on the right-hand side of the MBA-4 so that the slot in the butt plate frame aligns with the thumb screw hole in the side plate. 
  4. The top of the side plate will sit over the zert fitting, using the short cap head screw and 3/32” Allen wrench tighten the top side plate screw.
  5. Insert the side plate nut into the side plate and hold into position. Using the long side-plate screw, insert the side plate screw from the left side of the butt stock through the corresponding hole in the frame and the hole of the side plate, and tighten into the side plate nut using the 3/32” Allen wrench.
  6. Hold the thumb screw backing plate on the left side of the butt stock and place the star washer on the thumb screw and finger tighten the thumb screw.

Install a 3-Axis Butt Plate on an MBA-1 Butt Stock 

Install a 3-Axis Butt Plate on a MBA-2 Butt Stock 

Install a 3-Axis Butt Plate on a MBA-4 Butt Stock

Install a 3-Axis Butt Plate on a MBA Butt Stock

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