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Lightweight Free-Float Keymod-like Quad-Rail Handguard (Straight-Milled Slots)

  • 7497

This is a low profile, lightweight keymod-like* rail for the AR-15/M16 platform. It is a free-float design. You get a Picatinny rail on top and 3 keymod* rails on the sides/bottom.

It is a 1-piece design that requires the removal and change out of the barrel nut with the nut that is included. A 1-1/16 wrench, or ideally crow's foot will be required to tighten the new barrel nut to a torque of 30-50 foot pounds.

  • Super light weight
  • Super low-profile
  • Picatinny on top, Keymod* sections on sides and bottom
  • Black anodized aluminum
  • Unmarked
  • Rail is approximately 30mm over the barrel center to align with your flat-top Upper Receiver's rail

Specs (7-inch version)

  • Weight: 169g
  • Dimensions: 179 x 37 x 50mm (L x W x H)

Specs (9-inch version)

  • Weight: 195g
  • Dimensions: 229 x 37 x 50mm (L x W x H)

Specs (10-inch version)

  • Weight: 215g
  • Dimensions: 255 x 37 x 50mm (L x W x H)

Specs (12-inch version)

  • Weight: 247g
  • Dimensions: 306 x 37 x 50mm (L x W x H)

Specs (13.5-inch version)

  • Weight: 274g
  • Dimensions: 344 x 37 x 50mm (L x W x H)

Specs (15-inch version)

  • Weight: 267g
  • Dimensions: 382 x 37 x 50mm (L x W x H)

You get:

  1. Rail/handguard of your length choice
  2. Barrel nut
  3. Mounting screws
  4. 3mm hex key
  5. Four shims to help 'time' the barrel nut (not shown)
You should also buy separately:
  1. Some keymod rail segments as they are not included with this rail. Click here to get them 

Compatible with:

  • All AR-15/M16 upper variants that use a standard barrel nut 
  • Some keymod accessories (see note below)
  • All weaver and picatinny accessories for the railed portions 

Installation Difficulty: 

Tools required: 1-1/16 wrench, barrel nut greaseupper vice block, and torque wrench strongly recommended. Note you do not want to use an armorer's wrench here.

Installation Notes:Some fitting might be required due to variance between uppers. Also, it is recommended to tighten the barrel nut between 30-50 foot-pounds of torque. These are installed similar to the Noveske rails with a large spanner wrench on the flats in the center of the barrel. In a bind a set of channel locks or large spanner wrench should work or you can use a purpose built crow foot wrench.

*Note that the keymod slots are simplified slightly from the true keymod spec so that we can offer this great price. They are a straight milled keyhole slot, whereas the true keymod spec describes a chamfer (bevel) on the far side of the keyhole. For some keymod accessories this lack of chamfer might mean the accessory cannot be attached. However, for our picatinny rail sections and some accessories they attach just fine, we have received only two complaints out of 50+ rails sold. If for any reason you are not satisfied you may return your rail to us for a full refund.

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