MPA BA Bolt Action Mount

, , ,


The BA Series Mounts are designed to mount high-performance optics onto your Bolt Action rifles with Picatinny Rail Scope Bases. The 1″ & 30mm versions have a center line height of 110%. 34mm models offer push-button fit for either aluminum or steel rails, while 35 mm and 36-inch long scopes can use the standard mounting hole pattern at either end, which measures 125 mils +/- .0015″. This interface ensures positive engagement on both spec positions and specs ones, so you don’t need specialized tools!

Guaranteed Safe Checkout


MPA BA Bolt Action Mount

The BA Series Mounts are made for mounting high-performance optics onto Bolt Action Rifles with Picatinny Rail Scope Bases. Pic rail to scope center line height varies. 1″ & 30mm versions are 1.060″. 34mm are 1.060″, 1.125 and also 1.250. The 35mm & 36mm mount measurement is 1.250″ The mount is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. Horizontal split rings. The interface ensures positive engagement for both in-spec and out-of-spec rail systems. Absolute Return to Zero via multiple locking lugs on the rail interface’s bottom.

The MPA mounting system features the following advantages:

  • Extreme Bore Size Consistency within +/- .0002″
  • Roundness and Cylindricity of Bore within .0002″
  • The end user can confidently move the optic/mount to multiple rifles with simple windage and elevation adjustments.
  • Superior clamping surface to insure maximum rail engagement.
  • Lifetime Warranty
  • Length 4.760″
  • Weight 6.8 oz
  • Rail to Optic Center 1.060 (30mm & 1″), 1.125 & 1.250” (34mm) & 1.250 (35mm)
  • This mounting system is designed to handle large objectives up to 56mm (34mm Mount) and 50mm (30mm Mount).

This system provides over 3.5″ rail interface, providing extreme lockup on the host rifle’s scope base. Our NATO spec rail interface system pulls the mount onto the top of the pic rail, providing over 200% more rail contact than other competitive mounting systems that pinch the rail.

For proper selection of the correct mount, see the data below to match the proper MPA BA Mount to your optic:

  • MPA BA 1.060″ Height – Erector Housing to main tube measurement of 0.145″ or shorter.
  • MPA BA 1.125″ Height – Erector Housing to main tube measurement of 0.210″ or shorter
  • MPA BA 1.250 Height – Erector Housing to main tube measurement of 0.330″ or shorter

Note: For US Optic Model ER-25, please select the 1.250″ height for your optic. This is due to the erector housing width and configuration and the necessary clearances required for proper fit. Also, please notify MPA if this is the optic you plan on using. A special top cap is required to clear the elevation turret cap.


  • Burris XTR-II – 1.060″ Height
  • Bushnell Elite Tactical 34mm (all) – 1.060 Height
  • Bushnell Elite Tactical 30mm (all) – 1.060 Height
  • Khales 34mm – 1.125 Height
  • US Optic ER-25 – 1.250 Height
  • Vortex Razor HD 5-20 35mm x 1.250
  • Vortex Razor Gen II HD 4.5-27 – 34mm x 1.125 Height
  • Schmidt/Bender 34mm – 1.250 Height
  • Leupold Mark 8 – 35mm 1.250 Height
  • NightForce ATACR 5-25 – 34mm 1.125 Height
  • More Optics Added in the Future.

Additional information

Diameter and Height

34mm – 1.060" height, 30mm – 1.060" height, 34mm – 1.250" height, 34mm – 1.50" height, 30mm – 1.125" height, 34mm – 1.125" height, 35mm -1.125" height

Shopping Cart
MPA BA Bolt Action MountMPA BA Bolt Action Mount

Subscribe, Save & Win!

Subscribe to our email newsletter and you will be the first to hear about our sales, contests and giveaways!