Frequently asked questions

Thank you for joining the KDG family! We strive to provide you with the best products and outstanding services. Feel free to contact us with any other questions at

An item says In-stock, is it really?

Short answer yes. If marked In-Stock this indicates an item is accounted for in inventory.

What type of Payment Methods do you accept?

Preferably unmarked bills and favors… We accept all major credit cards. Please visit the

Payments and Shipping page for more information.

I bought an item from you but installed it incorrectly; can I get a replacement for free?

If you have installed your item incorrectly and need a replacement, email us and we can see what we can do to help. Please also visit our Return and Warranty pages for more details.

Is your warranty a lifetime warranty?

Yes, our products are covered under our limited lifetime warranty. Visit our Warranty page for more information.

Do you offer any discounts?

Yes. We gladly offer Military, LEO and First Responder discounts with valid ID, please email us for more info. We also offer several discounts throughout the year for special events, please join our mail list to stay up to date on the latest discounts offered.

The mail carrier is late or has lost my package; how should I proceed?

Once the package leaves our facility it is unfortunately out of our control what happens when in the mail carrier’s possession. Please contact the carrier to file a missing parcel claim.

If the package makes its way back to our facility, we will notify you via email to verify shipping address and then resend your order.

Do you offer free shipping?

Yes, we offer free shipping on all orders over $125. We also offer coupon codes for free shipping to qualifying parties.

I got a notification that my package has shipped but status still says, ‘Waiting for carrier / Not yet in system’ so where is my package?

Just because a shipping label has been created does not necessarily mean your package has left the facility. Shipping & Packing labels get assigned simultaneously once an order is processed and payment captured, this ensures everything in your order ends up in your package. Postal pick-up may take a few days after a label has been created. Please wait 1 week before inquiring about a shipment, if 1 week has passed then please contact us.

Do you ship outside of the United States?

Currently we can only ship webstore orders within the United States and US territories. International shipping requires larger quantity orders and are handled on a case by case basis.

When I place my order, how soon will it arrive?

Orders for items In-Stock are typically processed and shipped within 24 business hours. Some orders may take up to a week to ship. Shipment speeds may vary for holidays and trade-shows. Back-orders will be shipped as product becomes available, in order received.

Do you offer expedited shipping?

No. Currently we ship all online orders with UPS Ground, USPS First Class, FedEx, and USPS Priority Mail. Please contact us at for special circumstances regarding shipping.

What type of shipping do you use?

Please review our Payments & Shipping page.

Can I buy an item, and have it mailed to someone other than myself?

As long as it’s paid for, we don’t mind sending it wherever you want! In fact, we need more friends like you who buy MREX rails for their buddies. Cheers!

When will the SAS / ACR Stock be back in-stock?

The short answer is never. The ACR stock was discontinued by its manufacturer in January of 2022. Since the discontinuation KDG is no longer able to manufacture the adapter and provide the Scar Adapted Stock.

Yes, to your next question, we are looking for and working towards a suitable replacement for a Scar stock. Lead time for a replacement is currently undetermined.

Does the MREX fit on both FN Scar 16 and the SCAR 17 models?

Yes, all MREX Gen1, MkII and Mod3 rails will fit on any factory FN Scar 16 or 17 regardless of barrel length, caliber, or color. Check them out here.

Please note however: The length of the barrel might dictate what length rail is compatible.

Does the MREX fit on the FN Scar 20 model?

Yes and No. Only the MREX20 line of rails will fit on FN Scar 20 models.

Does the MREX fit on an AR15?

Yes and No. Only the AR-MREX line of rails will fit on AR15 style firearms.

Do the Front and Rar QD sling points fit on all FN Scar model?

Yes! The Kinetic Front a QD has been updated to work on ALL Scar models. The Rear QD will also work on all models.

Will my KDG Scar Talon Safety Selector work in my AR?

No. The KDG Talon Safety Selector only works on FN Scar rifle platforms.

Will you warranty wear on my FN Scar due to use with a KDG product? Will my firearm still be under its factory warranty if I modify it?

We do not warranty firearms. Factory warranties from different manufacturers are dependent upon that specific manufacturer. Please contact the maker of your firearm if you have any concerns. Please click here to review our warranty policy.

What Sidelok should I order for my optic?

Sidelok offers many different optics’ footprints that fit over 100 different optics currently on the market. For more info on optics compatibility please refer to the product page for a list on compatible optics. Feel free to also check out this link with loads of great info about optic footprints.

Does Sidelok hold zero?

If installed correctly onto your optic and your rifle, yes!

Does the Sidelok return to zero if removed from my rifle?

If the Sidelok is reinstalled in the same position, it will maintain zero.

Does the Sidelok have a break in period?

Yes.  Although tested multiple times at the factory prior to packaging, we recommend installing and removing your new Sidelok several times to help familiarize yourself with the mount and break it in when you first receive it.

Does the button have to be facing forward on the Sidelok?

Based upon how it was designed, the button works best on the front. The cam system internally increases tension as the optic is exposed to added forces like recoil.

Won’t Sidelok just fall off if the button is bumped?

No. Sidelok has a safety inside the button that prevents it from accidentally being pressed and falling off your firearm.

Will the Kinect pieces work on any M-lok accessory?

As long as that M-lok accessory was built to Magpul’s exact M-lok specifications, it should work no problem.

Does the Kinect have a break in period?

Yes.  Although we test these multiple times at the factory prior to packaging, we recommend installing and removing your new Kinect piece multiple times to help break it in when you first receive it.

My new Kinect piece had some marks on it when I got it, almost like it was used… What the___?

Kinect pieces are all tested multiple times prior to leaving the factory on both M-lok fixtures and actual M-lok rails. Small marks on the underside of the Kinect are due to testing.

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