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Sony A7R IV & A9 II Modular Plates

$90.00 to $205.00
1 Review


The Really Right Stuff BA7RIV-B camera body plates are all custom designed to make the most secure fit as possible on both the Sony A7R IV and A9 II. Each plate is precision machined from solid blocks of 6061-T6, aircraft grade aluminum.

The Sony A7R IV-B camera plate is fully compatible with any standard 1.5"-dovetail style quick-release system. The plate is also has contoured anti-twist flanges for a perfect fit, which prevents twisting between the Sony A7R IV or A9 II cameras and custom plate. The BA7RIV-B quick-release plates utilize a custom machined 1/4"-20 threaded, captive-style mounting screw that threads into the tripod mounting socket of your camera body. 

As part of a modular system, the BA7RIV-B plate still functions as a traditional camera mounting plate, but also has the added flexibility of accepting a separate dedicated vertical L-Component to create a fully modular L-Plate with two dovetail mounting surfaces. You can purchase the dedicated vertical L-component as a separate add-on or it is included in the L-Set.

Product Guarantee
All Really Right Stuff brand products are guaranteed to the original purchaser to be free of defects in materials or workmanship for five (5) years from the date of purchase. Product will be repaired or replaced at our option.


  1. CNC machined 6061-T6 aluminum
  2. Anodized; Type II Black
  3. Laser engraved center marks
  4. Integrated QD (Quick Detach) sockets for quick-detach strap systems
  5. 1/4"-20 threaded accessory mounting sockets
  6. Hand strap lug
  7. Full access to camera accessory ports
  8. Access to battery without removing plate
  9. RRS standard dovetail


  1. Length: 5.65"/ 143mm
  2. Height: 3.41"/ 87mm 
  3. Width: 2.68"/ 68mm 
  4. Weight: 4.9oz/ 139g

In the Box

  1. (1) Sony a7R IV base plate
  2. (1) Sony a7R IV L-Component
  3. (1) 5/32" hex key
  4. (1) Custom 1/4"-20 captive button screw
  5. (1) Custom 1/4"-20 flat head screw
  6. (1) User's guide

Ratings & Reviews

1 Review

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Perfect fit and no need to move the battery door!

by Arthur| 11/1/2019 11:57 am

This L-plate fits my new a7rIV just as perfectly as the RRS Plates for my a7riii—and better still, I didn’t need to move the battery door as I did for the previous generation. I’m one happy photographer.