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sig 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 (generally considered as a compact carbine without buttstock) configurations.

View More On Wikipedia.org
Recent contents
  1. S

    Sig Sauer MCX Virtus Patrol

      1. For Sale
    • $1800
    • Keizer
    • Oregon
    Selling my Sig MCX Virtus (gen 2), has low round count (~200). Asking $1800 obo Will ship, not interested in trades.
  2. FarmMech

    Sig mcx 300 blk barrel + 480 RDS ammo

      1. For Sale
    • $600
    • Aurora
    • Oregon
    Sig mcx Barrell with gas piston 300 black out Gen 1 I have been told but I haven't been able to find out barrel differences (I know there is hard gaurds 480 + RDS of ammo (one partial box) $600 for all. 450 for Barrell alone 250 for ammo Pick up in Aurora
  3. P

    SIG MCX Virtus 9 .300 blk upper

      1. For Sale
    • $1200
    • Beaverton
    • Oregon
    new in box complete SIG MCX 9" . 300 blk Virtus upper with receiver plug to add folding stock. $1350- now $1200! picked up in Beaverton no trades please
  4. K

    New Sig Spear LT upper in 556

      1. For Sale
    • $1350
    • Bellevue
    • Washington
    Hi up for sale is a new Sig Spear Lt upper. -16" -556 Brand new never fired. Complete upper, just need to add the Mcx buffer less stock adapter to any milspec AR lower.
  5. K

    Black Sig Spear LT 16" Upper 5.56

      1. For Sale
    • $1350
    • Bellevue
    • Washington
    Brand new Black Sig Spear LT 16" Upper in 5.56. Love this platform, but need the funds for another project. Complete upper, just needs the Sig adapter to bolt on to a mil spec AR lower. Thanks for your interest.
  6. J

    Sig MCX with Spear LT Stock

      1. For Sale
    • $1600
    • Portland
    • Oregon
    Sig MCX, 16" barrel in 5.56 rifle. I just upgraded this month to the new Spear LT folding/telescopic stock, which was $250. Round count is under 100, all unsuppressed. It is like new condition and I'm the original owner. I wasn't planning on selling this but looking to fund new project. It is...
  7. wscott202

    Sig MCX Canebrake w extras

      1. For Sale
    • $2350
    • Kalispell
    • Montana
    MINT Sig MCX Canebrake, new Romeo MSR on scalarworks mount, Inforce light, extra grip, can include Sig magnifier for an extra hundred, will include faux suppressor (not suppressor pictured) Selling to refinance property 2350 (gun alone is 2600 new)
  8. K

    Sig Mcx Virtus (upper only)

      1. For Sale
    • $1000
    • Bellevue
    • Washington
    Hi selling my Sig Mcx Virtus upper. Has seen limited use (3 times to the range) so maybe a 200 rounds down the pipe. Excellent condition, only selling since this is a spare sitting around collecting dust. I can possibly meet in the Portland area if needed. Please note this is the complete...
  9. K

    Sig MCX Rattler Upper in 5.56

      1. For Sale
    • $1100
    • Bellevue
    • Washington
    Hi, selling my mint condition Sig Rattler in 5.56. 5.5 inch barrel. It's a complete upper, ready to mount to your milspec lower. Less than 100 rounds down the pipe, and in excellent condition. Please note this is for the upper only. Thanks for looking.
  10. M

    SIG MCX Virtus PCP .22 Air Rifle

      1. For Sale
    • $250
    • Hillsboro
    • Oregon
    Hey all. This needs to go to a good home where it will actually see some plinking. I thought it was cool, bought direct from Scheel's and put maybe 50 pellets through it. Would feel comfortable calling this as close to like new as possible. Only thing I'll say is I installed some Daniel Defense...
  11. KUFCIS

    Sig mcx canebreak pistol

      1. For Sale
    • $2000
    • Estacada
    • Oregon
    NEW UNFIRED MCX CANEBREAK PISTOL. Comes w-factory box, 1 mag, lock & booklet. Removed the faux silencer & handgaurd & Installed new sig flash hider & midway short handgaurd. Also comes w-new collapsing SB pistol brace & 480 rds new ammo (see pics). Buyer must pass/pay for background chk. Willing...
  12. ivanthebear

    SIG MCX 9" 300 BLK barrel

      1. For Sale
    • $350
    • Vancouver
    • Washington
    Hello, I have for sale a SIG MCX 9" 300 Blackout barrel - $350 No rounds through the pipe. Picked up a 6" for my build instead. Open to trades for lights, quad rail handguards, etc (let me know what you have). Thanks!
  13. BigStick

    Mantis Blackbeard X (for Sig MCX)

      1. For Sale
    • $175
    • Newberg
    • Oregon
    Brand new, sealed in box, Mantis X Blackbeard for the Sig MCX. Auto-resetting trigger laser training system. Goes for $319 on their website. Selling for $219. Price drop to $200. Another price drop to $175 I live in Newberg and work in Tualatin and will drive 10-20 minutes to meet up.
  14. notgarandthumb

    SIG MCX - SPEAR LT 13 INCH COYOTE HANDGUARD

      1. For Sale
    • $175
    • Newberg
    • Oregon
    Factory replacement 13" handguard for the SIG MCX-SPEAR LT. Color: Coyote Tan. I took it off a new rifle, it's in great shape. Open to offers!
  15. Screach

    Sig MCX BNIB Spear LT 5.56 and Virtus 5.56 Barrel

      1. For Sale
    • $500
    • Beaverton
    • Oregon
    Hey all, up for sale today I have two MCX barrels. First, I have a used 16” Virtus Barrel purchased for my Spear LT. The barrel has approx 150rds down the pipe and is in excellent condition. Muzzle device has been removed and a taper adapter will be included. Virtus 16” 5.56 Barrel Asking $500...
  16. Screach

    BNIB Sig MCX Spear LT 16in Complete Upper

      1. For Sale
    • $1400
    • Beaverton
    • Oregon
    Hey all, looking to sell my Spear LT 16” upper in 5.56. It started life as a full size LE/Mil 16” rifle. Barrel has been replaced with a brand new unfired 16” 5.56 barrel. Upper and bolt components have seen 50 rds, barrel is unfired. The LE/Mil versions come with iron sights and a reviewer...
  17. Chris12612

    Sig MCX Spear LT 11.5 5.56

      1. For Sale
    • $3400
    • Sandy
    • Oregon
    Sig MCX Spear LT 11.5" 5.56 200 rounds fired Surefire closed tine Geissele charging handle Eotech Exps3-0 Eotech M33 magnifier Sig folding stock adapter Sba4 brace Surefire light not included. $3400
  18. K

    Sig Mcx Mpx collapsible stock

      1. For Sale
    • $140
    • Bellevue
    • Washington
    Hi all, Selling my Sig Collapsible stock. It was installed to try but ultimately I liked a folding style better so it has been sitting in the parts bin. As new, and hasn't seen any usage. May be interested in trades. Looking 556/223 M855 or M193 or range steel, 9mm range and 7.62 x 39 steel.
  19. B

    Sig MCX Regulator

    https://www.sigsauer.com/mcx-r-regulator.html Looks like SIG is entering the ranch rifle market. It's available in 5.56 or 7.62x39, and is compatible with Mossberg 500/590 stocks. Overall I like the concept, though I wish they would have gone with a side-charging design and different handguard...
  20. Jimmyod1

    Sig MCX Virtus PCP

      1. For Sale
    • $150
    • Portland
    • Oregon
    Overall good shape and works great, thought he tank is empty. Includes a mag and a good amount of pellets.
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