Review of the Blackhawk Knoxx SpecOps Stock Gen III for Remington 870

This is new review of the Knoxx SpecOps Stock, Forend and PowerPak. It has completely new photos and video.

This stock is one of the best choices for shooters which just bought their shotgun. This stock compensates recoil and you can spend more time on the range. Later when you become experienced shooter you may decide to install simple stock without recoil compensating systems. I have used Knoxx SpecOps stock for a long time and really liked it.

This stock became very popular because it has a lot of advantages. Stock is adjustable. You can adjust length of pull and it will be comfortable for both people with longer or shorter hands. For example, you do not need to install youth stock on your home defense shotgun and then change it to a standard one when you go hunting.

Knoxx SpecOps Stock and Forend
Knoxx SpecOps Stock and Forend

Installation of the Knoxx SpecOps Stock, Forend and PowerPak
The installation of this stock is simple and all tools are included. Here is video which shows how to install Knoxx SpecOps Stock, Forend and PowerPak:

Knoxx stock is made of high-quality materials and there are thousands of users which use these stocks for years. It can be used in all weather conditions. Pistol grip is a very good option for home defense and tactical shotguns.

There are several important things you should know about the Knoxx Specops stock for Remington 870. If you know your equipment, its weaknesses and strengths you can use it better and avoid mistakes and when we talk about firearms even injuries.

Attention: When we talk about the Knoxx stock, be sure to check which one you have. There are two types of the Knoxx stocks, one has built-in recoil suppression system, and the other one doesn’t. The Knoxx stock which doesn’t have the recoil suppression systems is “Knoxx Adjustable NRS Stock”. The NRS stands for “No Recoil Suppression”.

How the Knoxx SpecOps Stock Works

First of all let’s see how the Knoxx SpecOps Stock reduces recoil. This stock has two recoil compensating systems, one in pistol grip and the second one in stock itself. During recoil shotgun moves rearward over the pistol grip and this is the moment when systems work and reduce recoil.
Now when you understand how this recoil suppression stock for Remington 870 works you need to have several things in mind.

Here is animation which shows how the Knoxx SpecOps Stock works and where recoil compensating systems are located:

How the Knoxx SpecOps Works
How the Knoxx SpecOps Works

Use of Scope with Knoxx SpecOps Stock
Due to the about 1 inch move of the shotgun a scope without proper eye relief will come back and hit your head and may cause injury. So be sure to have enough space between your eye and scope and always warn about this people you give your shotgun to.

Here is animation which shows you why you need to be careful with Knoxx SpecOps stock using a scope:

Proper Eye Relief is Important
Proper Eye Relief is Important

Use of Oversized Safeties on Remington 870 with Knoxx Stock
Manufacturer of the Knoxx SpecOps stock recommends using only Wilson Combat Safety (Tactical Response Jumbo Head Safety by Scattergun Technology). This is because other big safety buttons, for example Vang Safety stick up further and when shotgun moves rearward button will hit the stock and damage it and even may cause injury.

Spacer Between Receiver and Stock on Remington 870
Some people don’t read installation instructions carefully or just forget to remove the metal spacer which is needed for the factory stock. Remember that you need to remove it installing the Knoxx SpecOps stock or otherwise you will have a gap between stock and receiver.

Does it Reduce 95% of Recoil?
In my opinion – no, it doesn’t reduce that much recoil BUT it reduces recoil significantly and I highly recommend it.

How Can I Disassemble the Knoxx SpecOps Stock
Do not attempt to disassemble Knoxx SpecOps stock because you will destroy the internal mechanisms. Blackhawk! says that internal springs have a 30,000+ round life expectancy, so I am sure you will be able to use it without problems for years.

The Stock Hits Me When Fired (Cheekslap)
There are shooting tips page in the Owner’s Manual which have some recommendations on how to avoid a “cheekslap”, it says clearly that you need to have several inches back from the flare.

Knoxx Tactical Forend
Knoxx Tactical Forend is a really good additional bonus. Knoxx forend is built of light-weight polymer and has integrated texture grooves. It is much more convenient than a standard Remington forend.
Another advantage and useful feature of the Knoxx Tactical Forend is that even if it pulled back you still have access to magazine tube.

Ergonomic texture grooves guarantee that you will be able to reload your shotgun even if your hands are wet.

You will not be able to use 6-Round or 8-Round receiver mount side saddle with Knoxx Forend.

Additional Accessories for Knoxx SpecOps Stock

Knoxx PowerPak Modular Cheek
Knoxx PowerPak – is a modular cheek piece with ammo holder and watertight storage compartment. It can be installed on Knoxx SpecOps Stock. There are two cheeks included: high cheek is for holographic sights or scopes, low cheek is for iron sights.

Knoxx PowerPak Modular Cheek
Knoxx PowerPak Modular Cheek

Installation of the Knoxx Powerpack is not difficult and takes just 15-20 minutes. Some of the screws are very small and installation is rather tricky. But when it’s ready it is easy to snap cheek on the stock.

This cheek looks good, shells are hold reliably in place. Knoxx Powerpak is good alternative to the receiver mount shell holders. Watertight storage compartment can be used to store earplugs and spare batteries.

Hogue HandAll Universal Grip

Hogue HandAll Universal Grip
Hogue HandAll Universal Grip

Hogue HandAll Universal Grip fits the Knoxx SpecOps Stock perfectly. It really improves handling of a shotgun. The rubber non-slip surface and palm swells make it easier to hold and control a shotgun. This upgrade is cheap ($10) and effective. If you don’t like it you can remove it anytime.

Remington 870 with Knoxx SpecOps Stock, Forend, PowerPak and Hogue HandAll
Remington 870 with Knoxx SpecOps Stock, Forend, PowerPak and Hogue HandAll

Some shooters say that they don’t like Knoxx stock because it has moving parts which can be broken but Blackhawk! guarantees that internal springs have a 30,000 round life expectancy and knowing that you don’t need to worry about anything.

Do you use Knoxx SpecOps Stock? Please leave a comment.

Recommended Product:
Blackhawk! SpecOps Knoxx Recoil-Reducing Stock
Blackhawk! SpecOps Knoxx Recoil-Reducing Stock
Get Blackhawk! SpecOps Knoxx Recoil-Reducing Stock on Cabela’s


  1. Thomas Fuller

    I’m very up in the air on deciding to purchase this stock. Thanks for the review on it – you mentioned everything I wanted to know.

    The biggest issue is compatibility with my wife’s shooting needs which is why I think the adjustable stock with recoil reduction is critical. Cheek slap is something we’re just going to have to experience and work around.

    Thanks again

    1. Thomas, you are more than welcome!
      I have experienced cheekslap just several first shots but later it was ok and I put about 1000 of shots using Knoxx SpecOps stock.

  2. Bill Doyle

    Vitaly, as mentioned in my intro comment, this is the setup I have also. I added the Surefire forend which cost almost what I paid for the gun! I also have the Hogue grip setup and love it.
    I would love to be able to replace the buttpad with a pachmayr or limbsaver piece off the rack though.

  3. I have the knoxx recoil reducing setup on my 870 express magnum. Went clay shooting the other day. 400 rounds of 2 3/4 between 3 people, other guns were a rem 1100 and moss pump tactical. My friends and I are all of similar build and experience. I was the only one without shotgun shoulder. Love this stock.

  4. Greg Summitt

    I have the knoxx NRS stock for my 870 and I love it. I love the way it looks and how comfortable it is to hold my gun while shooting. Even though I have the NRS the recoil isn’t all that bad.

  5. I have used the Knoxx SpecOps recoil reduction stock for about 3yrs now. At first I found the pistol grip slightly awkward, but it only took a few rounds to get used to it. You need to experiment where to place your cheek…too far forward and you will get slapped. Again, a few rounds and you’ll find out where to get a cheek weld. It DOES reduce felt recoil…a lot. I am very pleased with this stock. If looking for one, shop around. I’ve seen differences of $50.00 on this stock from different suppliers.

  6. John Young

    I own the Gen 2 Ver. For the 870 and found that blackhawk increased the force on the 2 recoil obsorbing springs so much that with only the grip spring in the stock. I can only move the stock less then 1/2 ” when I put my weight (200lbs) on the pistol grip and butt with the barrel muzzle pressed into the floor!! The only thing obsorbing recoil is the limbsaver butt pad! Called blackhawk and told to send it back after they e-mail me an rma # still waiting!! They won’t return my calls now. Bought this with my own money to see if this was viable to use in my LE agency equipment. With the stock’s performance and company response to my inquiry, I couldn’t recommend this product to my agency

  7. I have a 870 20 gauge. Do you know if it will fit that? When I dig down deeper I always see that it says for 12 gauge only.

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