PLAN-A™, Taper Mount Adapter for OMEGA™, NOMAD™, & other 1.375x24 threaded suppressors

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The Taper Mount PLAN-A™ adapter provides a Griffin Taper Mount interface for Silencerco® Hybrid™, OMEGA™, and Harvester 338™ as well as DEAD AIR ARMAMENT™ NOMAD™, and other suppressors with mount interface inside diameter threading of 1.375x24.   No proprietary tools required.  Machined in our Watertown headquarters from billet 17-4 stainless steel, this adapter provides a precision made interface that gives you access to nationally recognized Griffin Taper Mounts and accessories.   Precision, durability, and value are at the core of Griffin product design and manufacturing.  This product allows you to affordable kit up with the best muzzle devices in the industry. 

  • 17-4 Stainless Steel
  • H900 Heat treated
  • 2.3 Ounce Weight
  • Taper Mount Repeatability and versatility
  • Made in the USA


Silencerco® is a federally registered trademark of Silencerco LLC. and is one of many trademarks owned by Silencerco LLC. Griffin Armament is an independent manufacturer of parts and accessories that fit Silencerco® products, however it is not affiliated with or endorsed by Silencerco LLC.  The use of Silencerco® on this page is merely to advertise the sale of compatible parts or components.  


DEAD AIR ARMAMENT™ and NOMAD™ are trademarks of SOUND MODERATION TECHNOLOGIES LLC®. and are two of many trademarks by SOUND MODERATION TECHNOLOGIES LLC®. Griffin Armament is an independent manufacturer of parts and accessories that fit SOUND MODERATION TECHNOLOGIES LLC products, however it is not affiliated with or endorsed by SOUND MODERATION TECHNOLOGIES LLC®.  The use of NOMAD™, DEAD AIR ARMAMENT™, and SOUND MODERATION TECHNOLOGIES® on this page are merely to advertise the sale of compatible parts or components.  

Additional Details

Type Of Part:
Attachment System:
Taper Mount

9 Reviews

  • 5
    Plan-A taper Mount

    Published by Chad on 16th Jun 2020

    I recently switched all my eForm1 cans over to run Griffin brakes which also includes using the Plan-A taper mount. The build quality, fit and finish are outstanding. I've used Griffin products in the past and will continue to do so. Great company, great products.

  • 5

    Published by Michael on 10th May 2020

    I was not let down when I went to my PO BOX to pick up the last thing needed to complete my Form 1 Suppressor build. The fit, finish and functionality of this Taper Mount Adapter is outstanding! Very happy with Griffin Arms products!

  • 5
    Best plan

    Published by Quality on 30th Apr 2020

    I had my AAC suppressors back ends cut off and threaded by Ecco to accept the 1.375 options. Couldn’t be happier with the quality, lock up, and comp/brake/flash options by Griffin. I have a lot of 51t mounts to ditch now.

  • 5
    Awesome adapter

    Published by Kristopher Rocha on 15th Dec 2019

    I got this to go along with my Minimalist Brake to use on my Turbo K suppressor. Great design and helps keep my suppressor in it shortest configuration.

  • 5
    Good to go!

    Published by MP on 10th Sep 2019

    Bought both a Plan A Saker and Plan A Omega to mount my various SiCo suppressors to the wonderful Griffin taper mount brakes. I like the taper mount so much, I am going to mount minimalist brakes to a couple of my DT hunting rifles for use with both my SiCo and Griffin cans. I like the taper mount over direct thread for the lock-up and thread protection.

  • 5

    Published by Aaron on 9th Jul 2019

    I hated having so many QDs to deal with, and this simple but still complex mount eliminates the ASR from my life. I wish it was this easy with the 51t.

  • 5
    Great product but I hope Griffin Armament can create a Gate-LOK™ version as well

    Published by Jeremy Z. on 11th Jun 2019

    I own both SilencerCo Hybrid and Griffin Armament Optimus.

    This adapter allows me to use both suppressors on the same firearm that I installed Taper Mount FlashComp.

    I also have a M4SD flashcomp because I don't want to deal with threads. It is great for mounting bayonet clean and easily. I can use the A2 Optimus mount to put on my Optimus. However the A2 mount is not that fast for QD compared to Gate-LOK.

    It will be great if Griffin Armament can produce Gate-LOK™ adapters for both Optimus and for SilencerCo cans. IMHO, Gate-LOK is a better mounting solution than SilencerCo ASR interface.

  • 4
    Nomad for the win

    Published by Dave Jones on 17th Jan 2019

    Bought a nomad from my LGS in Texas. Was shocked when i realized it only came with a direct thread interface. Started looking around and this was the least expensive quality option to get my nomad going on muzzle devices. Wish i would have known when i bought the nomad otherwise I may have just gone with griffins Paladin suppressor to start but oh well live and learn. thanks Griffin for the parts. Review would have been 5 stars if my Nomad came with a mount.

  • 5

    Published by Instagramer on 17th Jan 2019

    This is awesome. They let me name this product on instagram! How cool. Love this company and cant wait to buy a couple so i can convert my corporate cans to awesome griffin taper mounts!

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