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Attention K-31 Shooters ! SAVE YOUR GP-11 BRASS!

Rock Solid Industries new Berdan military crimp cutter. For 7.62 NATO primed brass.
Works great with 7.5×55 Swiss GP-11 brass. I have used this tool as well for 8mm Mauser and 7.62×39.


Rock Solid Industries New Military Crimp Cutter

Using new brass which can cost up to a buck fifty per case today! And that’s such nice brass why would you throw it away?   It only makes good sense to reload those Berdan primed cases, our crimp cutter will allow you to quickly and cleanly remove the military crimp on brass or steel cases and leave the anvil untouched for an easy re-prime with Berdan primers. Made in the USA from heat treated A2 tool steel.  Available now for 20.00 plus shipping

Price Reduction!

Great News!  We’ve added new equipment to increase our production capacity! Making it possible to reduce the cost per mount, it allows us to pass the savings along to our customers. Last but by no means least…..We stay a made in the U.S.A. company!

I want to thank all of our customer for their support and help with comments and photos. We do read your feed back!
We will continue to find ways of improving customer support. R.S.I. will continue to develop and refine new products, so please
check the front page regularly for announcements.

Attention Customers

To All of our CUSTOMERS, we have been told by our sources for Mosin Nagant bolt bodies that they are out of stock.   Due to the current state of world affairs we do not expect to see any new sources for surplus bolt bodies any time soon.  Instead we suggest ordering our bolt welding service. Turn around is about 2 weeks at the moment.   That time will increase as we get into hunting season. We have been trying to locate a new supply but have been unsuccessful so far.  We here at RSI will continue to make every effort to locate a new supply of surplus bolt bodies.


New Products for 2015!

Compare 870

Converted Remington 870

Rock Solid is expanding it’s line of accessories with the addition of 2 new products.   The first is a conversion kit for the Remington 870, the second is a conversion kit to fit the Mossberg 500 series shotgun.  Both kits can be installed in less than an hour and come with the tools for installation.  The conversion is made from rugged glass reinforced polymer.

Features and Benefits

Designed to accept a wide variety of aftermarket AR-style accessories
Familiar AR-style grip and safety Split-trigger for increased safety
Variety of rail mounting areas for tactical accessories
Super-smooth and contoured slide release area
Rugged shell deflector for left handed shooters
Ergonomically shaped and easy-to-grip slide forearm
Generous access to loading port
Conversion assembles easily with tools provided
Easy to follow conversion instructions included
Multiple ambidextrous sling points for 1-point and 2-point sling
Field strips with tools included under butt pad
Manufactured from rugged, hi-tech, molded materials
Features an easy-to-grip, non-reflective surface texture
Does not in any way alter the original shotgun
Overall thickness: 2.75”, width: 8”, length: 28”
Shipping weight: 2 lbs 12 oz, package dimensions: 4”x12” x33”

Can I use a longer barrel (18 inch) and extended mag tube?
Yes, with the open front end design a longer barrel and mag tube can be used. (extended mag tube not included) Will not work with ATI and Wilson Combat extension with large attachment nut.

What guns do these kits work with?
This conversion kit only fits 2 ¾ and 3 inch 12 gauge Remington 870/ Mossberg 500 shotgun with plain barrel with bead sight. It will not work with a 3 1/2 inch receiver, ribbed barrel, 18.5 inch barrel with rifle sights. Mossberg’s with bayonet lugs or with a barrel brake that is non-removable. We have found that on some Mossberg’s the metal forearm tube is shorter than others, in this case approximately 1-3/16 inch must be cut off the front of our forearm tube so the tube nut can be reinstalled.   Maverick’s/Mossberg’s with the one piece forearm will not work.

Available NOW from our online store for just 298.00 plus shipping!

NEW for 2015! Swiss K-31 Firing Pin Spring

k31 300x300It’s hard to believe that anyone could improve on something the Swiss built but we did!  Introducing the RSI custom wound Swiss K-31 Firing Pin Spring.  This spring was developed in a joint venture between the owner of WWW.SOCAMO.COM and C&R Spring Company LLC, the same guys who designed our incredibly popular Mosin Nagant spring.  Their goal was to create a spring that would improve the functionality of  the Swiss K-31 rifle without sacrificing reliability.  Each spring is made using high quality steel,  the spring ends are then squared and ground.  Then they are treated with a black oxide coating to prevent corrosion.  Once the spring takes a “set” in the bolt the user will see a noticeable improvement in the performance of their rifle.  The new design significantly decreases lock time and to improves bolt cycling (one of the biggest complaints about the K-31).  This new spring also makes it easier to remove the firing pin when disassembling the K-31 bolt for cleaning.  We’ve tested this spring with both commercial and surplus loads and the performance has been outstanding.  Available Now in our online store.  Click Here To Purchase

Swiss K31 Scope Mount Update

At this time we will not just sell the mount as we can not guarantee the function of the mount if not installed by Coyote Creek Armory

How to ship your K-31 rifle in for scope mount installation. Strip the rifle down to just the barreled action with the bolt. We recommend that you slip into a soft gun case. Then pack it into a sturdy box. Ship via UPS, please make sure to purchase the return shipping slip along with any insurance you would want.


Any rifles shipped to the installation facility without the return shipping tag will not be worked on until the return shipping amount has been received!
The turn around time for installation on your rifle is approximately three weeks.

Ship via UPS to
Coyote Creek Armory.
102 Locust Fork Road
Stamping Ground KY 40379
Phone 1- 859-576-0567

RSI Trigger Shoes Now Available


Trigger not included

Trigger not included

Our Mosin Nagant Trigger Shoe is designed to fit on your standard Mosin Nagant trigger. These should also fit on Finnish triggers that use the Mosin Nagant design as well. Adding a trigger shoe to your trigger greatly improves the feel and allows for better positioning and control. It also will make your trigger pull feel lighter because of the improved positioning. The shoe installs quickly simply with 2 hex head screws and is easily removed for rifle break down when cleaning. These trigger shoes are made right here in the USA from sturdy 6061 Aluminum and then coated with a clear anodized finish.  Available in our online store

RSI Introduces Our New Tactical Knobs

Tactical KnobsWe at Rock Solid Industries are proud to announce the latest edition to our product line,  our new RSI Tactical Bolt Knobs.  These knobs are custom machined for RSI and will fit your Mosin Nagant or any other rifle that has a standard 5/16 – 24 thread on its bolt handle.

The current line will offer 2 different designs in each material, first is the “Tactical Weave” and the second is a “Spiral Weave” Pattern.

These new bolt knobs are available in your choice of materials, brass for those who would like a little more show, aluminum for those who are concerned about adding weight and steel which is by far the most rugged and can be blued to match your rifle.  Each knob is fitted with rubber O rings to help with grip and comfort.  These Tactical Bolt Knobs are the perfect match for our new RSI threaded bolt handle.  Prices for the knobs are Brass $28.00, Aluminum and Steel will sell for $25.00.  These are available now in our online store.

MI-24C Mount comes to the Finnish M39 variant

scope3The MI-24C  rail system is now being produced for the Finnish M39 rifle as well as the original M91/30.  The M39 version is the latest addition to the RSI product catalog.  This rail is modeled after the US Armies M24E1 sniper rifles picatinny rail system.  It mounts using the same hole pattern as our standard mounts with an additional stabilization mount at the M39’s rear site.  Designed to allow for expansion the MI-24C rail includes 2 additional attachment points on either side for accessory rails (available separately) to expand it’s capabilities even further.  The MI-24C rail system can be used with flip up sites, conventional scopes, LER scopes or used in combination with night vision and other rail mounted accessories.  If your looking to build a tactical M39 give this mount a try.  You can see this product as well as the rest of the RSI catalog of products in our Online Store

New Threaded Bolt Handle Now Available!

New from Rock Solid Industries our new threaded bolt handle for the Mosin Nagant M91/30 and it’s variants,  The new style handle is slightly over 2.19 inches long with a diameter of .380 inches.  The threaded portion of the handle is just a little over 1/2 inch in length and has a 5/16″-24 threads.

RSI’s new bolt handle is designed to work with the longer style bolt knobs such as our own bolt knobs as well as those made by Surgeon Rifles.   Shorter style knobs will work but the threads may require some shorting of to prevent the handle from bottoming out.  Please Note:  While use of a shorter style bolt knob my be possible, the results may be less that satisfactory for positioning of the handle.  RSI will soon be releasing a longer version of this handle soon for projects that wish to incorporate a shorter style bolt knob in there build.

The price for the new handle is 30.00 us.  The new handle will also be available in our Bolt Body welding service for the same 50.00 price as the standard knob.  CLICK HERE TO PURCHASE