Loading... Please wait...

Our Newsletter

EFFIN A Compensator MKI By Ares Armor

  • EFFIN-A Compensator Stack and Fine Tune
  • EFFIN-A for the .308
  • EFFIN-A Compensator 556
  • EFFIN-A on an AR
  • EFFIN-A Small Tuned
Your Price:
$89.95 (You save $10.00)
Calculated at checkout

Product Description

EFFIN-A Compensator

The EFFIN-A Compensator was designed to provide the end user with the ability to adjust the manner in which the gas exits from the weapon. The EFFIN-A features 7 columns and 4 rows of exit ports that can be either opened or closed through easy to use set screws. The exit ports are not threaded completely through to eliminate the possibility of the screw being over turned into the chamber. This feature also allows the screw to "bottom out" increasing tightness and ensuring that it will not work itself out under the pressure of the gasses being released by the weapon. This Compensator also features the ability to "Stack" multiple comps end to end giving further options to the end user.
Objects at rest tend to stay at rest and objects in motion tend to stay in motion unless acted upon by an outside force. Muzzle flip is caused by the pressure that is released down the center of the bore in relation to the contact points of the weapon and the shooter. Muzzle climb is solved by this device in two ways; The EFFIN-A Compensator's timed and tunable exit ports act as an outside force that returns the weapon to a "position of rest" after the round has been fired (the round acts as the initial force causing the unwanted motion) by directly countering the force in relation to the standard shooter contact points on the weapon. This Compensator is also designed to directly increase the weapons moment of inertia by accurately counter balancing the mass of the front of the weapon in relation to the force of motion created by the original force. The balance concept is similar to ancient weight ratio techniques used in spears to allow steady aim and flight.
Due to the amount of time and money we spent on researching the amount of pressure released during the act of firing a round and adjusting the Compensator's balance to correspond to it we will not be releasing the exact weight until after the pre-order is finished and products have already shipped. Note: testing was conducting with two types of ammunition, Matchgrade and GreenTips. The general weight is between 4 and 5 ounces.

The EFFIN A Compensator is now available for multiple rifle platforms including the AR15 (5.56,.223 Rem, .22LR), AR10 (.308, .300, 7.62X54, 6.8. 6.5), and AK47 (7.62X39) The EFFIN-A Compensator comes in Matte Black or Stainless Steel for all models. 

WARNING If you attempt to modify or use these devices in any way attempting to create baffles for a suppressor, it will instantly void our warranty and possibly land you in jail. PLEASE OBEY THE LAW!

We do not recommend stacking more than two of these on top of each other. If you do so, you do it at your own risk and it will also void the warranty.
Available for the following: 

AR15 Now available 1-2X28
AR10 (.308) Thread: 5-8X24 
AK47 (7.62x39) Thread: 14X1LH

Find Similar Products by Tag

.223  .308  5.56  Compensator  

Find Similar Products by Category

Write your own product review

Product Reviews

Showing reviews 1-10 of 13 | Next

  1. GREAT!!!! 5 Star Review

    Posted by on 17th Oct 2014

    Very easy to tune and recoil that is there is straight back. Makes it very easy to stay on target through multiple shots.

  2. Excellent Recoil Management Device 5 Star Review

    Posted by on 17th Sep 2014

    This device is so well designed, and works so well, a user can even adapt it to overcompensate and blow a barrel downward when firing! Absolutely superior design and quality.

  3. Great AK Comp 5 Star Review

    Posted by on 4th Apr 2014

    4.5 stars, rounded up to 5.

    Great AK comp - 7.62x39, 16" barrel. Muzzle rise and movement is nearly eliminated once fully tuning is complete. Recoil is reduced to a "slower" and milder push back. Muzzle blast for shooter is not significantly increased over bare muzzle as far as I can tell. Well machined, well designed, easy to use. Good packaging and instructions.

    Minor cons: Could be lighter and throws balance and "pointability" of gun off slightly (comparatively heavy at 5oz, MKII model is 2.x oz), no flat areas to tighten fully tighten with wrench (only on MKII model), could have included 1 or 2 extra Belleville (conical) washers of different sizes for timing (came with 2 washers of the same size, one for device, one for holding the cap on).

  4. Wow, just wow! 5 Star Review

    Posted by on 28th Mar 2014

    After our wonderful (sarcasm) postal service delivered a ripped open and empty package I got a hold of Jesse. He took care of it very quickly and got a second pair (I ordered 2) headed my way. I was amazed at just how much less recoil my Molot Vepr (7.62x54r) had. Once I started the tuning process I was even more amazed at how well it kept the muzzle level. It has definitely tamed the beast! I am sure that I will have similar results with the AR-15 version that my wife shoots. Thanks for a great product!

  5. The last muzzle brake / compensator you will buy! 5 Star Review

    Posted by on 9th Dec 2013

    I purchased the: AK47 (7.62X39) The EFFIN-A Compensator for my 23" barrel 7.62 X 54R Russian Vepr Rifle. Product arrived promptly, build quality is evident; great fit and finish. I have been to the range twice and feel have it pretty well sorted out: barrel rise is all but gone; softened recoil; multiple rounds on target while maintaining sight picture. I may try to rotate 22.5 deg. where holes are not straight up and down and see if I can tune better, however right now I couldn't be happier - hands down the best $100.00 I have ever spent on a rifle accessory!

  6. Amazing! 5 Star Review

    Posted by on 18th Sep 2013

    Great comp that is actually capable of overcompensating and blowing the barrel down! Able to be fine tuned to any load-out -- very good product!

  7. very effective on my AK 5 Star Review

    Posted by on 6th Aug 2013

    I received the part very quickly. Instructions were clear, build quality was excellent, installation was smooth. The packaging was entertaining - you have to buy to find out. Gross adjustment was very quick, fine adjustment took a bit more time. Go easy, take your time, you can overcompensate. Nice product!

  8. Effin-A MKII 5.56 compensator 5 Star Review

    Posted by on 4th Jul 2013

    I have order MKII Compensator early in the day and was shipped out by the close of business on the same day. I received the MKII Compensator in about 3-4 days in the mail (USPS). Inspected and almost everything was included except for the instruction. I will have to wing it when I adjust the compensator. The compensator is well made and very solid. The new MKII does not have the capability to add another compensator to it compare to the former one. Removed the old A2 compensator and easily installed the MKII onto the AR15 barrel. I love the new look of the MKII Compensator. The new MKII have 3 rows instead of the 4 rows for adjustment. I not sure how much this will make a difference. if the new MKII is anything like the former compensator, it will be worth the money. I will have to provide a later update when I have completed fine tune of the compensator. stay tune. Predator Armament sells the MKII $10.00 cheaper than the competitors!! I will do business with Predator Armament any day. They are very fast in responding to orders. Great job.

  9. Effin A all the way 5 Star Review

    Posted by on 17th Dec 2012

    Received my effin a compensator in a timely manner. First thing that catches your eye is the packaging especially the labels on the pill bottle that the compensator is packaged in.

    Upon opening the bottle the compensator itself is crafted out of a very solid feeling piece of metal. The black coating is well done and feels super strong.

    Compensator attached to the end of my AR-15s with no problems, haven't had a chance to shoot it yet, but the weekend will be here soon and I can't wait to try it out! Overall I'm totally impressed with the Effin A compensator at this moment.

  10. Awesome 5 Star Review

    Posted by on 17th Nov 2012

    Everything that it was proported to be at a reasonable price point. I saw it first in Recoil magazine but just the specifications were listed. After watching the three videos, I was impressed. The three shooters were spot on with their assessment; except I thought they said it was "ugly" - I'd say impressive. Jesse was very helpful, especially as I was somewhat impatient with it being on back order. Directions were written well and easily followed for tuning. Thank you.

Showing reviews 1-10 of 13 | Next

Add to Wish List

Click the button below to add the EFFIN A Compensator MKI By Ares Armor to your wish list.