(5 customer reviews)



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SKU: MRX5-120 Categories: ,


The Kinetic MREX Receiver extension provides the solution you’ve been searching for with your SCAR rifle platform. The MREX was designed to be a simple, durable, and lightweight. By utilizing a one piece design, the MREX maintains extreme durability. The MREX also allows for removal of the barrel with the extension still attached, allowing users to still change out there barrel assembly in just a few screws. The overall design puts modularity in the places you want it and need it and no where else; while reducing the profile of the factory SCAR platform. There is no better solution to add to your SCAR.

  • Works on all 7.62 and 5.56 SCAR models w/ 16″ or longer Barrels.
  • “Magpul FDE” Cerakote Finish (*KDG Does not warrant Color Variation in relation to FDE SCARs. SCARs vary in color on the anodized upper receiver. This color was chosen because it is the most consistent with after market FDE accessories from Manufacturers like Magpul*)
  • Magpul M-LOK™ Modular Design
  • ADDS ONLY 3.7oz to the weight of your SCAR!
  • Improved rifle balance and weight distribution
  • 6.5″ added modular rail space from front of SCAR receiver, for use with any SCAR L & H barrel configurations. (certain Flash hiders and certain suppressors will not fit.)
  • 2x Uncle Mikes QD Mounting Points
  • Installation still allows for quick change barrel. (See Tutorial Video)
  • Full kit includes 2 MAGPUL M-LOK™ polymer accessory rails, installation torx wrenches, torx screws and vibratite


  • Material: 6061-T6 Aluminum
  • Finish: Non-Reflective Clear Type III Hard-Coat Anodizing w/ “Magpul FDE” Cerakote
  • Length: 13.25″
  • Length added: 6.5″ -Ideal for any standard length SCAR-L or SCAR-H.
  • Weight of full kit: 9.6oz
  • 100% Made in the USA

*When installing your MREX rail system or SCAR sling points, we recommend hand tightening all screws, then applying a 1/4 – 1/2 turn to insure your screws are tightened properly. Please make sure to use Vibratite on all screws installed.*

Additional information

Weight 9.6 oz

5 reviews for MREX- M-LOK™ 6.5″ FDE

  1. David (verified owner)

    I installed the FDE 6’5″ MLOK MREX on my Scar 17. Installation was very easy and it is very solid. Love the new slim profile – thumb over bore shooting is now very natural. The MREX is some very squared aware kit and completely improves teh handling or the Scar for very little added weight over stock. The included MLOK section was perfect for a for mounted bipod for long distance precision shooting as well.

  2. mikemoyer1 (verified owner)

    The MREX MLOK 6.5″ in FDE on my scar 16 was easier to hook up than a cheer leader on prom night. Without the picatinny cheese graders on my points of contact, but the ability to affix a multitude of gizmos and gadgetry, this product has made me 86 to 91% more combat effective! Thanks Kinetic Development, Mike M

  3. Marc (verified owner)

    I installed this extension on my SCAR 17 as an experiment to compare it with another after-market extension I ordered (similar to FN’s factory extension). I removed the previous one and haven’t looked back. I decided to keep the MREX 6.5…it’s far superior for a couple of reasons. First, it’s one piece; the one I removed is 2 pieces. Second, it’s much slimmer and gives me a better grip on the fore end. You lose the factory side- and lower-mounting rails, but they make the fore end wider and the grip isn’t as good. It comes with 2 smaller Magpul MLOK rails so I was still able to mount a laser and light. My SCAR is black, but I went with the FDE because I like the bi-tone look. Whichever color you go with, you won’t be disappointed. I need to mention Kinetic’s customer service…it’s fantastic. They respond quickly to inquiries and I received my order in 2 days. If you want a little more real estate on your FN’s stubby fore end like I did, you’ll be pleased with this piece of machinery and you’ll like the slimmer look and feel of your SCAR.

  4. David (verified owner)

    The mrex MLOK 6.5 is the best scar accessory to hit the market. The scar is perfect in almost every way, EXCEPT the short foreend. Not only does this give you added length for better control and grip on the rifle, but it slims down your rifle by a lot. M lok was a great choice over keymod in my opinion and the included mlok rails are a great bonus. The MREX is worth every penny and I will be buying another ASAP for my scar 17 to replace a rail extension from a competitor (yes, its that good) It improves the balance of the scar in my opinion. The design is perfect as well, it being one piece was a great idea. Buy with confidence!

  5. Andrew (verified owner)

    Everything about this rail was well designed and thought out. Installation was extremely easy with the tutorial video. Even for me. Took less than 20 minutes to install and everything included made it easy all the way down to the screws and how they were packaged. The rail is super light and low profile and gives you so much more room to work with and it looks Damn good. Now I can run a mlok VG and my bipod at the same time. Customer service is top notch and I couldn’t be more satisfied!

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