Borden BRMMF Multi-Flat Actions

The Borden BRMMF is the first action produced by Borden Accuracy that is not round. It is 1.400 on the 3 and 9 oclock position flats with a round bottom for easy bedding. BRMMF actions also share the same action screw hole locations as their cousins the BRM and BRMXD.

Buy Now

Gorgeous Design

Flashy. Different. New. These are just a few comments we get regarding the Borden BRMMF. When polished, they shine line a diamond and clearly stand apart from the normal round actions you see on the line.



Dual port or bottom eject, keyed bottom lug or pinned front lug, the Borden BRMMF is nothing if not versatile. Using the same port lengths as the BRM and BRMXD, the MMF fits nicely in your Borden stable.  Taylor Accuracy carries several styles of MMF actions but if you want something special, feel free to contact us.


Perfect for HV Class

Are you interested in shooting 13.5 HV class and don’t know which action to choose? The Borden BRMMF is a perfect choice. With it’s slightly heavier profile and longer bedding surface the BRMMF is a perfect companion for 13.5 lb rifles.

Plans and Pricing

Here are some of the most popular Borden BRMMF configurations our clients order.

Action Only

  • Borden BRMMF Action
  • Single Port Configuration
  • Dual Port Option (+$75.00)
  • Left or Right Hand
  • Matte Finish
  • Keyed Bottom Lug
  • 20 MOA Dovetail or Picatinny Rail
  • Spiral Fluting
  • Standard Handle

Short Range Competition

Perfect For Glue-In Applications
  • Borden BRMMF Action
  • Dual Port Configuation
  • Single Port Option (-$75.00)
  • Left or Right Handed
  • Matte Finish
  • 20 MOA Dovetail or Picatinny Rail
  • Keyed Bottom Recoil Lug
  • Spiral Fluting
  • Standard Handle

Fully Loaded

Your Diamond on the Firing Line
  • Borden BRMMF Action
  • Dual Port Configurtaion
  • Single Port Option (-$75.00)
  • Left or Right Hand
  • Polished Finish
  • Keyed Bottom Recoil Lug
  • Polished 20 MOA Picatinny Rail
  • Spiral Fluting
  • Standard Handle

What Our Customers Are Saying

Don’t just take it from us, let our customers do the talking!

“Polished Multi-Flat actions are drop dead gorgeous. The angles really show the quality of the work when browsing rifles on the line.”

James Eazor

Owner, EPS Bullets

Coming Soon

Seth Wooten

Coming Soon after worlds

Tim Miller

Frequently Asked Questions

Can BRMMF Actions Be Polished?

Yes, the Borden BRMMF action can be polished. However, due to the care that must be taken not to round off the sharper edges of the flats, the fee is $300.00 and can take up to one week to complete.

Can a BRMMF Have A Bottom Eject Port?

Yes, Borden BRMMF actions are bottom eject compatible. They follow the same guidelines as the BRM and BRMXD bottom eject specifications and caliber lists. That list is as follows:

  • 6 PPC (Requieres PPC Bolt Face)
  • 6 BR and BR Improved Calibers
    • 6 Dasher
    • 6 BRX
    • 6 BRXD
    • 6BRA


Does the BRMMF Share The BRM Inelt?

The BRM and Borden BRMMF have the same action screw hold spacing. Just have your gunsmith open up a BRM inlet to fit the BRMMF and bottom recoil lug and you are good to go.  Length is the same.

Will A Dual Port Eject A 284 Round

Yes, the Borden BRMMF dual port comes with a 2.4″ ejection port.  This length will eject a fired 284 Winchester case without issue. It also ejects the 308 Winchester and 6.5 Creedmoor effortlessly.

Don't Be Shy

If we didn’t answer all of your questions, feel free to drop us a line anytime.

Get In Touch


Taylor Accuracy

© 2016 Taylor Accuracy