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MK18 M4A1 Handguard Quad Rail Two-pieces Design FSP Cutout AR15 M4 M16 - 12.7 inch

MK18 M4A1 Handguard Quad Rail Two-pieces Design FSP Cutout AR15 M4 M16 - 12.7 inch

Regular price $88.99 USD
Regular price Sale price $88.99 USD
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Estimated Delivery Time

Ships From: United States
Estimated Delivery Time:
2~6 days.

Ships From: China
Estimated Delivery Time:
10~15 days.

Note: For countries outside the United States, please choose to ship from China.

  1. This quad rail handguard is designed for fitting the MK18, .223 rifles, which is applicable to field combat practically.
  2. Cut-out along the top of the rail accommodates M4 upper receiver groups with fixed front sight posts while maintaining rail space beyond the front sight
  3. Clever Top/Bottom Two-piece Design with Integral Spinal Cords/Alignment Housing for Great Fit, and the Bolt-Up System securely attaches handguard to the upper receiver.
  4. Great accomodating capability for the accessories Installed on the rails, and it allows the individual operator to handle freely.
  5. Comes with Mil-Spec steel barrel nut, screws and allen key.
  6. The interrupted Mil-Spec 1913 top Rail Platform with the FSP cutouts provides ample space for optics or includes removable front triangle flip sight. The bottom rail does not have a cutout, not fit for the front sight base with bayonet lug.
  • Guide Type: M4A1 Handguard.
  • Rail: Interrupted Quad Rail.
  • Compatibility: M4A1, .223 rifles.
  • Finishes: Black Matte Hardcoat Anodized.
  • Top Rail Length Before Cutout: 7.28 inch/85cm.
  • Gas System Length: Carbine Length.
  • Length: 12.7 inch.
  • Weight: 22.4oz/635g
  • Width: 2.24".
  • Height: 2.29".
  • Inner Diameter: 1.18".
  • Handguard Materials: 6061-T6 Aluminum.
  • Barrel Nut: 45 Carbon Steel.

Package includes:

  • 1 x 12.7" MK18 handguard
  • 1 x Steel Barrel Nut
  • Allen key & Screws
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Customer Reviews

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Brandon S.
Issue with fitment, awaiting response

Looks well made, but the rail doesn’t fit straight on my barrel at all, awaiting response from customer support