Your shopping cart is empty.

  • Menu
  • (0) Cart

BLEMISHED - AT3 Tactical Carbine-Length 7" Free Float Quad Rail Handguard T-Series - Oval Vent Holes

No reviews

You will receive fast, free shipping for all orders over $35

Shipping cost is $5.50 for orders under $35. We ship with UPS and USPS. 

Most orders ship out within 24 hours

You will receive tracking information immediately at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses.  

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you're dissatisfied with your purchase, in any way, please contact us at - we will do our best to make it right.

Product Options


BLEMISHED PRODUCT -  Some of the small holes in the barrel nut may not be drilled perfectly. Still fine to use. May have scratches, scuffs, other cosmetic defects. Guaranteed to function as normal. 

The AT3 T-Series is a classic free floating quad rail at a fraction of the price of the "big brands"


  • "Monolithic" rail design - creates a continuous rail with a flat upper receiver. No gap!
  • Universal - fits with standard 1.25" barrel nut (upper receiver threads).
  • T-marked for easy accessory location
  • Mil-spec (MIL-STD-1913) picatinny on all 4 rails - 16 slots on top rail, 14 on other 3 rails
  • One-piece construction - rock-solid fit!
  • Will fit over most low-profile gas blocks (including the blocks that we sell)
  • Compatible with piston kits (Adams Arms, more)
  • Requires some disassembly to install - check out our installation videos to see the process
  • Everything in the pictures is included (rail, barrel nut, locking ring, set screw)


  • Please Note: These quad rails are made for standard AR-15's. If you have a 7.62/.308 AR variant, check our our AR-10 / 7.62 / .308 page.
  • Material: 6061 Aircraft Aluminum
  • Finish: Hard-coat anodized (black)
  • Length: 7" Carbine-Length
  • Inside Diameter: 1.75"
  • Weight: 11.7oz
  • Packaging: PE Bag
  • Included in the box: Quad Rail Handguard, Locking ring, Set Screw.


Q: How do I know if this will fit my AR-15?
A: This will fit any AR-15 that has a standard mil spec upper receiver. It will require some modification to your firearm though, including replacing the barrel nut, removing the flash hider, and possibly adding a low profile gas block. Want to learn more? Watch some installation videos.

Q: Do I need to buy anything else?
A: For longer handguards you may need to replace the gas block or front sight with a low profile gas block, available here. These gas blocks are low enough to sit under the quad rail. (Since this is a 7" handguard, you should be able to skip this step).

You will also need to get an armorer's wrench for the barrel nut, and we highly recommend a vise block to hold the upper receiver in place while you work on the weapon. Get armorer's tools here.

Q: Will this work with my AR-10/.308?
A: No - these quad rails are made for standard AR-15's. If you have a 7.62/.308 AR variant, check our our AR-10 / 7.62 / .308 page.

Recently Viewed Products