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sig sauer mcx

The SIG MCX is a family of firearms designed and manufactured by SIG Sauer, produced in both selective fire and semi-automatic only models, and features a short-stroke gas piston system, which is inherited from the earlier SIG MPX submachine gun. The MCX is available in rifle, carbine, short-barreled rifle, and pistol configurations (the latter configuration generally conforming to the definition of a compact carbine but for taking a pistol brace rather than a buttstock).

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Recent contents
  1. ktzdaman

    Sig Sauer MCX barrels and parts

      1. For Sale
      2. For Trade
    • $200
    • Hillsboro
    • Oregon
    Listing some extra parts I have available. MCX 16" 556 barrel with taper (200 round estimate) with 15" rail - $500 MCX 9" 300blk barrel with taper (unfired) with 9" rail - $500 Brace - unused - $150 Midwest industries non-collapsible stock - $200 Meet in Hillsboro. Can ship for $10 more...
  2. L

    Sig Sauer MCX Spear-LT 5.56mm NATO 11.5in

      1. Want to Buy
    • Grants Pass
    • Oregon
    Looking for Sig Sauer MCX Spear-LT 5.56mm NATO 11.5in Coyote Cerakote/Black Modern Sporting Pistol - 30+1 Rounds.
  3. ktzdaman

    Sig Sauer MCX Virtus 556/300blk

      1. For Sale
      2. For Trade
    • $2499
    • Hillsboro
    • Oregon
    Selling my very nicely setup sig Sauer Mcx: Virtus paltform Radian charging handle Geissle Mcx trigger (stupid expensive) Strike mad lever Sig 16” 556 barrel with silencerco asr (500 rounds fired) Sig 300 blk 16” barrel with silencerco asr (unfired) Midwest industries handgaurd for suppresors...
  4. ktzdaman

    Sig Sauer MCX Virtus with upgrades!

      1. For Sale
      2. For Trade
    • $2600
    • Hillsboro
    • Oregon
    Making available my nicely set up MCX! Comes with: 16” 556 barrel and 16” 300blk barrel! Original hand gaurd and Midwest industries full length hand gaurd. Radian charging handle and two extra originals. Geissele Mcx trigger (do not have original anymore) Streamlight flashlight just...
  5. AlHalvy

    Sig Sauer MCX Spear LT 9 300BLK, tasteful mods, Like New (30 rounds fired)

      1. For Sale
    • $2000
    • Happy Valley
    • Oregon
    Sig Sauer MCX Spear LT in 300 Blackout with 9" Barrel. Has had exactly 30 rounds fired through it, could pass as new. Original owner, purchased at NW Firearms. Comes with original box, factory trigger, charging handle and safety. Mods included: Larue MBT-2s Trigger Radian Raptor Charging Handle...
  6. ktzdaman

    Sig Sauer MCX 300blk 16 barrel

      1. For Sale
      2. For Trade
    • $550
    • Hillsboro
    • Oregon
    Appears unfired. For the MCX Virtus. Chambered in 300blk. 16 inch. $550
  7. ktzdaman

    Sig Sauer MCX Virtus

      1. For Sale
      2. For Trade
    • $2700
    • Hillsboro
    • Oregon
    Thinning the heard. Ran about two hundred through the brand new 16” 556 barrel. Amazing shooter. Next to no recoil. Sig Virtus Mcx in black. Sig colapsible stock with magpul stock. Radian Mcx charging handle and two extra stock Mcx charging handles. Geissle Mcx trigger. 16” barrel in...
  8. E

    New Sig Sauer MCX Spear LT 13" (Rifle Length) Coyote Handguard

      1. For Sale
    • $220
    • Oregon City
    • Oregon
    New and it was mounted... $220
  9. Chapo135

    Sig Sauer MCX Spear LT .300BLK 9" w/Ammo

      1. For Sale
    • $2050
    • Portland
    • Oregon
    Stripped my Spear LT and just selling the base pistol. Has less than 500 rounds through it. Has a small nick in one of the mlok slots, should be easy to file out. Comes with 6 Smoke Lancer Mags and the JMAC Customs RRD-2C Keymo Muzzle device installed. I have the original muzzle device as...
  10. DIYshooter

    Unfired Sig Sauer MCX Spear LT 300Blk pistol

      1. For Sale
    • $2300
    • Boise / Meridian
    • Idaho
    Got this with my other MCX and I just don’t shoot 300blk that often. This is Unfired. It will come with all the sig factory stuff including the box. The only thing I did was swapped the muzzle device for A Silencerco 30cal ASR Brake. I’d rather use the funds for other projects. My loss is...
  11. PocketSand

    SIG Sauer MCX Telescoping Folding Stock - FDE

      1. For Sale
    • $150
    • Albany
    • Oregon
    Selling an FDE telescoping folding stock for the MCX, or any similar firearm with a 1913 rail for a stock. Barely used and in very good condition. Willing to ship or meet in Albany. Cash, Paypal F&F, Venmo, or Zelle. Not looking for trades.
  12. ktzdaman

    16” sig Sauer Mcx virtus

      1. For Sale
    • $2400
    • Hillsboro
    • Oregon
    Selling my 16” sig Sauer Mcx Virtus. Barrel has 60 rounds down it. Bought the barrel new from Sig 6 months ago. New Midwest industries hand gaurd. Radian raptor charging handle. Geissle trigger. Magpul stock. Strike industries forward assist. Gun is an amazing shooter! Not included with gun...
  13. PocketSand

    SIG Sauer MCX Telescoping Folding Stock - Like New

      1. For Sale
    • $150
    • Albany
    • Oregon
    Pretty much new in box. Purchased this a few months back but went with something else and never even installed it. Comes with T27 bit. Willing to ship or meet in Albany. Cash, Venmo, or PayPal F&F. Not looking for trades at the moment.
  14. PocketSand

    SIG Sauer MCX OEM Ambi Charging Handle

      1. For Sale
    • $40
    • Albany
    • Oregon
    Very little use. Came off a Spear LT after I installed one with bigger latches. Retails for close to $100 new. I have two of these. Asking $50 each. Willing to ship or meet in Albany. Cash, venmo or PayPal F&F.
  15. HighLine

    New: Sig Sauer MCX Spear LT 9" in 300 Blackout

      1. For Sale
    • $2499
    • Newberg
    • Oregon
    Just in and only have 1 The New Sig Sauer MCX Spear LT Chambered in 300 Blackout 9" Barrel Only $2499.99 + background check or shipping to your FFL https://www.highlinefirearms.com/products/sig-sauer-798681660841-3591
  16. PocketSand

    Sig Sauer MCX Spear LT/Virtus 11.5" 7.62x39 Caliber Exchange Kit (Barrel, Bolt, & Handguard)

      1. For Sale
    • $900
    • Albany
    • Oregon
    Selling a very lightly used caliber exchange kit - everything needed to convert a MCX Spear LT or Virtus to 7.62x39. This includes a Spear LT 11.5" 7.62 barrel, bolt, and 10” handguard. These should work on either a Spear LT or a Virtus, although the Virtus upper lacks holes for the handguard...
  17. ktzdaman

    Sig Sauer MCX Virtus with extras

      1. For Trade
    • Hillsboro
    • Oregon
    Putting my sig Sauer Virtus Mcx up for trade/sale. Started life as the 11.5 version and I just recently (about a month ago) bought the 16” barrel (directly from sig) and the Midwest industries rail (new from MI). Beautiful set up. I shot it as 11.5 and it was a tack driver. 16” is unfired. The...
  18. A

    Sig Sauer MCX Spear LT 11.5" 7.62x39 + (1) 28-round Magazine - BNIB/Never Fired **Price reduced**

      1. For Sale
    • $1795
    • Lake Oswego
    • Oregon
    Selling a BNIB - never fired Sig Sauer MCX Spear-LT 11.5" 7.62x39 Pistol - willing to sell lower/upper separately. Price includes (1) 28-round Duramag magazine Asking $1795 - MCX Spear pistol comes new in the box. **Price reduced to reflect a batch of magazines that were sold separately**...
  19. Chapo135

    Sig Sauer MCX Spear-LT 9" .300BLK

      1. For Sale
    • $3250
    • Portland
    • Oregon
    Need this one gone. This pistol has seen less than 500 rounds through it. No issues. Don't really need to go into specifics about this firearm as if you're looking at this, you likely know everything about it. Latest gen MCX with fully ambi lower. This will come with everything pictured and...
  20. O

    Sig Sauer MCX Virtus/TACOPS 11.5" 5.56 & 6.75" 300BLK Package

      1. For Sale
      2. For Trade
    • $4000
    • Portland
    • Oregon
    Want a piston gun for suppression with caliber conversion? This was my idea but it was a pain to swap the barrel and the zero changes. With this setup, you can have two optics with two zeros that you don't have to mess with. Just got to transfer the BCG and CH and good to go! This package has...
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