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PMM SCAR 16/17 Picatinny Rail Extension (PRE)



Earn up to 135 Points.

Product Details

Parker Mountain Machine is proud to now offer the PMM Picatinny Rail Extension (PRE) for both the SCAR 16/17 Weapon systems.


We took the standard M-Lok and Keymod Rail Extensions and redesigned them to match seamlessly with the FN factory picatinny rails at the 3, 6 and 9 o’clock positions.


The PRE has been CNC’d in-house out of T6-6061 aluminum and then hardcoated per military standards. The PMM  PRE is a low Profile and lightweight solution to mounting mission essential accessories on the SCAR 16/17. PMM machined additional vent slots into all of the picatinny rails to lighten the PRE and also enhance the rifle’s ability to cool-down after sustained strings of fire.


By adding a 2″ of rail extension to their standard or SBR length SCAR, a shooter gains the much needed space to extend their support hand while still maintaining access to the SCAR’s gas block.


Product Features:




  • 1x PMM Picatinny Rail Extension (PRE) in either Black or FDE 8625 type 3 class 2 industry standard hardcoat.
  • PMM PREs maintains a fully free-floated barrel when installed.
  • Limited Lifetime Warranty.
  • Installation is simple using the factory intended front receiver “horseshoe” Carrier”Rail Mounting points.
  • PMM PREs installs in minutes with no permanent weapon modification.
  • Ultra lite weight/Low Profile design.
  • All PMM PREs will work with any 1913 picatinny-style rail attachments.
  • PMM PREs weigh only 2.6oz and maintain the same lines as the FN factory rails.
  • PMM PREs allow for full service of the gas system as well as removal of the Barrel as the factory intended it.


Download PDF pmm_scar_mre-kre-pre_instalation_instructions.pdf

Additional information

Weight N/A

Black, FDE

21 reviews for PMM SCAR 16/17 Picatinny Rail Extension (PRE)

  1. Jared E.

    The rail sits nice and snug. Plenty sturdy for lights and lasers. My rail extension is more bronze colored than FDE. It adds a little extra character to the SCAR’s 50 shades of FDE. Thanks PMM!

  2. larry n.

    You really can’t go wrong with anything from PMM. This extension looks excellent on my SCAR 17 alongside PMM rail elimination panels. Quality, excellent fit and the best customer service on the planet.

  3. Matt

    Perfect fit! Looks and performs like a dream on my SCAR 16. PMM never disappoints!

  4. Doug

    Great addition to my SCAR. Installs in a few minutes with a single hex key. It uses the existing screws on the rifle, so break out that blow torch for the 6 o’clock screws. FNH uses some serious loctite on those, heat is the only way to get them loose.

  5. Andy S.

    Horrible. I had to drill out the hole in the bottom pic rail (factory one) to make it have enough slack to fit in and still the extension is jammed in at an angle. It flat out doesn’t fit right.

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