Shipping Information:
We are experiencing a large increase in orders. Non-firearm orders are estimated to ship within 7 business days after the order is placed. Firearm orders will require more time. We apologize for any inconvenience. We are working to process and ship each order as quickly as possible.

If you would like to request a cancellation of your order, you may do so by visiting your Order History page, and selecting the order you would like to cancel. Due to the high demand and limited supply of certain items, we have temporarily suspended dealer sales in order to service as many of our own customers as possible.

Colt AR-15 A4 Tactical Carbine 5.56x45 NATO with Lightweight Barrel

  • Item Number: AR6720
  • /
  • View More Items by Colt
  • /
  • Condition: NEW
No Longer Available

    This product is no longer available. We don't know when or if it will be back in stock.

    $1,199.00
    $1,049.99
Share this
  • SMITH AND WESSON MP15 SPORT II 5.56 RIFLE

    Smith & Wesson MP15 Sport II 5.56mm Rifle with Dust Cover and Forward Assist
    $999.99

  • SMITH AND WESSON MP-15 SPORT II 5.56 OPTICS READY

    Smith & Wesson MP15 Sport II 5.56mm Optics Ready Rifle
    $899.99

  • WINDHAM WEAPONRY WW-15 MPC 5.56 M4A4 RIFLE

    Windham WW-15 MPC 5.56mm M4A4 Rifle with Detachable Carry Handle
    $1,086.00 $999.99

  • COLT M4 CARBINE 5.56MM SEMI-AUTOMATIC RIFLE

    Colt M4 Carbine 5.56x45 NATO CR6920 Series
    $1,999.99

  • SPRINGFIELD SAINT 556 M-LOK AR15 B5 FURNITURE

    Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture
    $1,149.99

  • BLACK RAIN ORDNANCE SPEC 15 FDE CERAKOTE 5.56MM 16` BBL MFT GRIP/STOCK

    Black Rain Ordnance Spec15 Series AR15 5.56mm Semi-Automatic Rifle FDE with MFT Milspec Buttstock
    $1,469.99

  • DANIEL DEFENSE DDM4 V7P 300 BLACKOUT PISTOL WITH PSB

    Daniel Defense DDM4 V7P 300 Blackout Semi-Automatic Pistol with Stabilizing Brace
    $2,199.99

  • WILSON COMBAT PPE 5.56MM AR PISTOL WITH M-LOK HANDGUARD

    Wilson Combat PPE 5.56mm AR Pistol with M-LOK Handguard
    $2,149.99

  • Winchester 5.56mm NATO 62 gr FMJ M855 Green Tip Lake City 20/Box

    Winchester 5.56mm NATO 62 gr FMJ M855 Green Tip Lake City 20/Box
    $24.99
    ($1.25 / round)

  • Winchester 5.56mm 55 gr Full Metal Jacket USA 20/Box

    Winchester 5.56mm 55 gr Full Metal Jacket USA 20/Box
    $24.99
    ($1.25 / round)

  • Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box

    Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box
    $24.99
    ($1.25 / round)

  • Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box

    Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box
    $22.99
    ($1.15 / round)

  • PMC X-TAC 5.56mm NATO 62 gr M855 Green-Tip 20/Box

    PMC X-TAC 5.56mm NATO 62 gr M855 Green-Tip 20/Box
    $24.99
    ($1.25 / round)

  • Federal 223 Rem 69 gr Sierra MatchKing BTHP Gold Medal 20/Box

    Federal 223 Rem 69 gr Sierra MatchKing BTHP Gold Medal 20/Box
    $37.99
    ($1.90 / round)

  • Federal 5.56mm NATO 62 gr FMJ Green Tip XM855 1000/Box

    Federal 5.56mm NATO 62 gr FMJ Green Tip XM855 1000/Box
    $1,249.99
    ($1.25 / round)

  • Sellier And Bellot 5.56mm 55 gr FMJ Tactical Ammo 20/Box

    Sellier And Bellot 5.56mm 55 gr FMJ Tactical Ammo 20/Box
    $24.99
    ($1.25 / round)

  • Adi 5.56mm NATO 62 gr FMJ 900 Rounds in Ammo Can

    Adi 5.56mm NATO 62 gr FMJ 900 Rounds in Ammo Can
    $1,124.99
    ($1.25 / round)

  • TROY 5.56MM 30-ROUND BATTLEMAG FOR AR-15 RIFLES

    Troy 5.56mm 30-Round Battlemag for AR-15 Rifles
    $10.99

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Black Magazine
    $16.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine with Window
    $19.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD MAG

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine
    $15.99

  • MAGPUL PMAG 10 GEN M3 AR-15 556 NATO 10 RD MAG

    Magpul PMAG GEN M3 5.56mm 10-Round AR-15 Magazine
    $19.99

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Magazine with Window
    $19.99

  • MAGPUL PMAG 40 GEN M3 AR-15 556 NATO 40 RD MAG

    Magpul PMAG 40 AR/M4 GEN M3 5.56mm 40-Round Magazine
    $29.99

  • MAGPUL PMAG 20 GEN M3 AR-15 556 NATO 20 RD MAG

    Magpul PMAG GEN M3 5.56mm 20-Round Black Magazine
    $19.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD MAG (TAN)

    Magpul PMAG GEN M3 5.56mm 30-Round Coyote Tan Magazine
    $19.99

  • DURAMAG 223/5.56MM 10-ROUND AR-15 MAGAZINE

    Duramag 223/5.56mm 10-Round AR-15 Magazine
    $17.99

  • AMEND2 5.56 30RD TRUMP 2020 MAG BLACK

    Amend2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Trump 2020 Limited Edition)
    $29.99

  • BLACK RAIN ORDNANCE AR-15 30 RD TATTERED FLAG MAGAZINE

    Black Rain Ordnance 5.56mm 30-Round AR-15 Magazine with Tattered Flag
    $29.99

Product Description

What’s in the Box

  • Colt AR-15 Lightweight Carbine
  • Magpul® 20-Round PMAG
  • Magpul® MBUS Back-Up Sight
  • Cable Lock
  • Owners Manual

This AR6720 Lightweight LE Carbine delivers the high performance you’d expect from Colt. And with a 1 in 7” twist, ammunition selection is virtually unlimited.

Features these Magpul® accessories: MBUS Back-Up Sight and a 20-Round PMAG.

  • Model: AR-15A4
  • Caliber: 5.56x45 NATO
  • Barrel Length: 16.1” Lightweight
  • Bore: Chromed, 6 Grooves, 1-7” RH Twist
  • Front Sight: Adjustable Post for Elevation
  • Rear Sight: Flip-Up, Magpul® MBUS Back-Up Sight
  • Extended Length: 35.5”
  • Collapsed Length: 32”
  • Weight: 6.2 lbs.
  • Action: Direct Gas System, Locking Bolt
  • Finish: Matte Black

Customer Comments & Questions

Customer Reviews

(5 out of 5) The only true light AR....
by from Macon, Ga on

Ignore factory figures....The M4 16.1 is only a fraction of an ounce under 7lbs. This rifle is 6.25lbs, and with 20rd mag, still just under 6.5lbs.....Which ties a 10/22 in an stainless side folder...and shorter than same .22 in factory stock. If you want an AR that truly handles and weighs as a rimfire, this is THE one.

(5 out of 5) Nice AR
by from Charleston, SC on

Very well built!