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colt m4

The M4 carbine is a shorter and lighter variant of the M16A2 assault rifle. The M4 is a 5.56×45mm NATO, air-cooled, Stoner expanding gas system (commonly misidentified as direct impingement), gas-operated, magazine-fed carbine. It has a 14.5 in (370 mm) barrel and a telescoping stock.
The M4 carbine is extensively used by the United States Armed Forces and is largely replacing the M16 rifle in United States Army and United States Marine Corps combat units as the primary infantry weapon and service rifle.
The M4 is also capable of mounting the M203 and M320 grenade launchers. The distinctive step in its barrel is for mounting the M203 with the standard hardware. The M4 has semi-automatic and three-round burst firing modes (like the M16A2 and M16A4), while the M4A1 has semi-automatic and fully automatic firing modes (like the M16A1 and M16A3).

View More On Wikipedia.org
Recent contents
  1. dizzyd dos

    Colt M4 AR Package

      1. For Sale
    • $600
    • Newberg
    • Oregon
    Back up for sale. Colt Magpul MOE carbine. Low round count <500 rounds. Comes with 2magazines, VFG, flashlight mount, Magpul hand stop. And a NIB Sig Romeo 5 red dot sight(also in FDE)
  2. GSchreiberPDX

    Colt M4 LE6920 Carbine 5.56 with Optics and Magpul Furniture

      1. For Sale
    • $700
    • Portland
    • Oregon
    Lightly used Colt M4 LE Carbine in 5.56. Comes with Aimpoint Patrol Rifle Optic (12841), Vortex VMX-3T 3X magnifier, Magpul furniture, 4 Magpul PMAG 40-round magazines coupled together in pairs (only one shown in photos, but I have both), 1 Magpul PMAG 30-round magazine (not shown in photos)...
  3. dizzyd dos

    Colt M4 Magpul MOE

      1. For Sale
    • $700
    • Newberg
    • Oregon
    For sale. Carbine length gas system.Low round count. Comes with Magpul sling and a magazine. No trades. Met in Newberg-$700
  4. GSchreiberPDX

    Lightly Used Colt M4 5.56MM LE Carbine with Optics and Extra Magazines

      1. For Sale
    • $900
    • Portland
    • Oregon
    Lightly used Colt M4 5.56MM LE carbine with extras. Magpul furniture, Aimpoint Patrol Rifle (12841) 2 MOA red dot sight, Vortex VMX-3T flip mount 3X magnifier, one 30 round PMAG Magpul magazine, four 40 round PMAG Magpul magazines coupled in twos (only one pictured, but I have all four), and...
  5. ORfisherguyx

    Colt M4 Carbine LE6920

      1. For Sale
    • $1100
    • Oregon City
    • Oregon
    Here is a new, unfired Colt LE6920 M4 Carbine. Barrel is stamped 5.56, while box says 223 Remington. Please see the photos for details. Detachable carry handle, but also includes a Magpul rear sight. Original box, manual, lock and a gen2 mag. I'm adding two new Magpul gen3 windowed magazines...
  6. captqc

    Sold, Unfired Colt M4 Carbine

      1. For Sale
    • $900
    • Tigard
    • Oregon
    New in the box Colt M4 Carbine factory outfitted with Magpul OD furniture. Model number: LE6920MP-OD Edit: throwing in a second 30 round Magpul magazine to sweeten the deal! Asking $900, Buyer pays transfer fees.
  7. MikeSD

    Promoted  Colt M4 Carbine - Never Fired OEM-2

      1. For Sale
    • $900
    • Renton
    • Washington
    Cannot be transferred to anyone in WA, or anywhere not allowed by law. Selling my Colt M4 Carbine. Never Fired. Originally purchased as an OEM-2. Very Excellent condition. I have just about any kind of high capacity you might need. But selling with two metal mags. And a never used 100 round...
  8. F

    Colt Combat Unit LE6960-CCU Early Release Mid Length M4 NOS Talo

      1. For Sale
    • $1200
    • Canby
    • Oregon
    NOS Colt M4 Carbine Mid length Combat Unit rifle. I have owned for some time and never fired. Been in safe since. This is not the CR6960 but LE6960-CCU. This is the early 2016-2018 1st release, not the newer release this is the early release UPC 098289020277. FFL in Aurora. Local...
  9. Chris12612

    Colt M4 Lower with Geissele trigger

      1. For Sale
    • $550
    • Sandy
    • Oregon
    Colt M4 Lower Geissele ultra duty lower parts kit DDC Geissele SSA-E trigger CQD sling mount Ergo grip B5 sopmod stock $550 cash no trades
  10. RobMa

    - SOLD - New Colt M4 receiver with roll marked cage code/square - SOLD -

      1. For Sale
    • $199
    • Seattle
    • Washington
    Sorry, this item has sold New Colt M4 receiver with roll marked cage code/square $199 shipped Please IM me for any questions and/or offers Cross posted on ARFCOM I take PayPal friends and family Shipping OK, S/H free No trade requests please. No separate part sales please No face-to-face...
  11. F

    WTS Colt M4 22 OPS Walther Umarex Quadrail NOS

      1. For Sale
    • $600
    • Canby
    • Oregon
    Colt M4 .22 LR OPS rifle. Walther/Umerex. NOS in box. I have never fired this rifle. Comes with four extra magazines not shown. They are unopened. I did install a new Magpul MOE butt. Original included. Has cheap red dot sight installed. They don't make these anymore. Local inspection in...
  12. RobMa

    - SOLD - New Colt M4 CQB 10.3 inch 5.56mm Barrel Assembly w/ Fixed Front Sight - SOLD -

      1. For Sale
    • $299
    • Seattle
    • Washington
    Sorry, this item has sold New Colt M4 CQB 10.3 inch 5.56mm Barrel Assembly w/ Fixed Front Sight Factory Colt M4 CQB profile, 10.3 inch, 5.56x45mm NATO, carbine length gas system barrel. Complete barrel assembly features M4 feed ramp, barrel nut, fixed front sight tower with sight post, and is...
  13. eem228

    Hk416 / Colt M4 22lr magazines

      1. For Sale
    • $13
    • Culver
    • Oregon
    Have a bunch of 22lr mags that fit both the HK 416 and the Colt M4/M16 style rifles. Some are in the package and some are open. Most open are new or in near new condition. Would like $15 each. Would prefer to ship but can meet up if schedule works. Shipping will be $20 usps flat rate. Here...
  14. C

    Colt M4A1 Carbine

      1. For Sale
    • $1100
    • Happy Valley
    • Oregon
    Selling my Colt M4A1 Carbine. I was told this is a surplus rifle from a security contract, or something like that, when i bought it. Definitely shows signs of use, but still in nice condition and has an extremely smooth action. Caliber: 5.56 Nato Barrel length: 16” C Stamped upper and Bolt...
  15. ilikegunspdx

    30 rd .22 mags for hk 416, G36, beretta arx 160, colt m4, Hammerli TAC 1 $12

    They all use the same mags. At beretta USA. Free shipping over $95. Will ship to OR for now anyway. Normal price for these is $27-$32. Very high quality mags.
  16. W

    Colt M4 upper group

      1. For Sale
    • $450
    • Poulsbo
    • Washington
    Colt upper for sale. 16” government profile barrel, Surefire 3-prong flash hider, Knights Armament RAS, Colt bolt carrier group and Charging handle. Have 1,000 rounds through it and good condition overall, minus normal handling marks. Selling for $450 cash only. Can ship in or out of state.
  17. clanhanson

    *SPF* Colt LE6920SOCOM Upper, New

      1. For Sale
    • $800
    • Helena
    • Montana
    Up for sale is a like new, unfired Colt LE6920SOCOM upper; includes new Colt BCG w/C etching and Colt milspec charging handle. 14.5" SOCOM barrel is CAGE coded and pinned/welded to 16 inches from factory. Upper receiver is Cerro forge marked with "M4" stamped at the front face of picatinny...
  18. ilikegunspdx

    Colt m4 commander complete lowers avaialable

    If anyone is interested. https://armsunlimited.com/colt-m4-commando-556-semi-auto-lower-receiver-assembly/
  19. T

    Genuine Colt Factory OEM M4 AR15 Upper Receiver Cage Code Marked 13629 Square BAFE Near Mint

      1. For Sale
    • $400
    • Portland
    • Oregon
    Hello, I have for sale two near mint condition Colt Factory OEM M4 AR15 Upper Receivers. Colt Cage Code Marked 13629 BAFE Square Forge Mark. Machined with M4 Feed Ramps and laser engraved T-marks on the Picatinny rail. A thoroughbred upper receiver perfect for a new duty gun or clone build...
  20. TheRealMP

    Vintage Colt M4 Upper

      1. For Sale
      2. For Trade
    • $600
    • Post Falls
    • Idaho
    Colt Upper with Colt BCG. 1/9 twist HBAR barrel.
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