AR-15 Extended Quad Rail Handguard with FSP Cutout | Carbine Length | Drop-in

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100% Risk Free, Lifetime Warranty

The Monstrum Tactical drop-in AR-15 extended quad rail handguard with FSP cutout is a quick and easy install on any carbine length AR-15 rifle platform. It allows for the mounting of tactical accessories such as bipods, flashlights, and sights. The unique forward extension installs in place around your front sight post and provides for added rail space for accessory or hand placement.

Please note that the Extended Carbine Length Quad Rail with FSP Cutout will not fit on Ruger AR-556 model rifles without modification. For more details, please read the following: Quad Rail with A2 FSP Cutout Modified for Ruger AR-556.

Before purchasing and installation, we recommend viewing our installation guides.

  • Includes: Top Rail section, Bottom front rail section, Bottom rear rail section, 8 Allen Screws, Allen wrench
  • Materials: 6061 Aluminum Alloy
  • Compatibility: AR-15 Rifle with delta ring and front end cap installed. Will not fit on Ruger AR-556.
  • Weight: 18 oz
  • Length: 10.5 in
  • Height: 2.5 in
  • Internal Diameter: 1.38 in
  • Color: Black or Flat Dark Earth
  • Warranty: Lifetime

6 Reviews Hide Reviews Show Reviews

  • Perfect Fit

    Posted by William Turner on Oct 7th 2019

    Easy to install, great fit and looks great. Highly recommended and you get to keep your A2 front sight.

  • great product

    Posted by dkamm on Jun 4th 2019

    good quality. great price. had it for close to 2 years now-very durable on a duty M4. Streamlight TLR-1 fits perfect in front of FSP. Does add weight but gives you lots of rail. looks great on 16" barrels. Highly recommend.

  • Great product and easy to assemble

    Posted by Kyle on May 16th 2019

    Fits perfect on my 10.5” pistol, it’s almost flush with the original flash hider but I put a warcomp on it and it looks great!

  • Extended Quad Rail Handguar

    Posted by Scott on Feb 26th 2019

    Forgot to add on the above review that it fit on a Palmetto State Armory (PSA) upper without any trouble at all.

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