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ohhunt

ohhunt® MK12 Free Float Quad Rail Handguard 4" 7" 9" 12" for M4 M16 AR-15 SR-15

ohhunt® MK12 Free Float Quad Rail Handguard 4" 7" 9" 12" for M4 M16 AR-15 SR-15

SKU:M4-FB-12

Regular price $52.90 USD
Regular price Sale price $52.90 USD
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Free US Shipping

1. Free shipping for all orders over $10.
2. Estimated delivery time(USPS): 2 to 6 working days.

Pre-Order?

1. Pre-orders will ship on or after 24/02/2026.
2. Do not select Pre-order items if you need them urgently.

Note: Pre-order items are expected to begin shipping around February 26th. Stay tuned.

Features:

  1. For MK12 and AR-15/SR-15 based platforms; not compatible with SR-25 variants.
  2. Four Picatinny Rails for the Installation of Flashlight, Laser and Red Dot Sight Scope and so on.
  3. This MK12 handguard uses a proprietary barrel nut that may be installed using a standard AR-15 armorer’s barrel nut wrench (sold separately). 
  4. Shock Proof Can be Used on Real Fire Caliber.

Specification:

  • Guide Type: MK12 Quad Rail Handguard.
  • Compatibility: For MK12/AR-15/SR-15, Most Tokyo Marui spec, M4 / M16 Upper Receivers, not compatible with SR-25 variants.
  • Finishes: Matte.
  • Height: 2.3 inch.
  • Width: 2.17 inch.
  • Barrel Nut Inside Diameter: 1.2 inch.
  • Barrel Nut Outer Diameter: 1.88 inch.
  • Materials: 6061 Aluminum Alloy.
  • Rail Type: Picatinny Weaver.
  • No. of Rails: 4.

⚠️MK12 Handguard Installation Notes:

  1. 1. Remove the barrel from the host weapon upper receiver, and remove old barrel nut assembly.
  2. 2. Hand-tighten the barrel nut onto the upper receiver threads.
  3. 3. Torque Barrel Nut to 30ft. lbs. or greater if necessary for gas tube clearance. Do not exceed 35 ft. lbs.
  4. *(Aluminum barrel nuts are much lighter than steel barrel nuts, but they also have a lower torque capacity. Over-tightening can cause thread damage.)
  5. *This MK12 installation of the handguard requires an Armors wrench or vice block.

Handguard Parameter:

Type Actual Length Weight (including Barrel Nut)
4 inch 4.0" 252g
7 inch 7.4" 240g
9 inch 9.05" 384g
12 inch 12.12" 460g
12 inch FSP 12.12" 436g
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