Sig Sauer MCX Patrol 5.56mm with KeyMod Rail

  • Item Number: RMCX-16B-TELE-P
  • /
  • View More Items by Sig Sauer
  • /
  • Condition: NEW
Sig Sauer MCX Patrol 5.56mm with KeyMod Rail
$1,649.99 $2,131.00

No Longer Available
This product is no longer available. We don't know when or if it will be back in stock.
  • DANIEL DEFENSE DDM4 V7 5.56MM SEMI-AUTO RIFLE

    Daniel Defense DDM4 V7 5.56mm Semi-Auto Rifle with Mil-Spec + Cerakote Finish

  • DANIEL DEFENSE DDM4V7 PRO 5.56MM SEMI-AUTOMATIC RIFLE

    Daniel Defense DDM4V7 Pro Series 5.56mm Semi-Automatic Rifle
    $2,271.00

  • DANIEL DEFENSE DD M4A1 5.56MM SEMI-AUTOMATIC RIFLE

    Daniel Defense DD M4A1 5.56mm Semi-Automatic Rifle

  • DANIEL DEFENSE DDM4 V1 5.56MM M4 CARBINE

    Daniel Defense DDM4 V1 5.56mm M4 Carbine
    $1,946.00

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

    Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box
    $8.99
    ($0.45 / 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
    $8.99
    ($0.45 / round)

  • Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box

    Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box
    $10.99
    ($0.55 / round)

  • PMC 223 Rem 55 gr FMJ BT Bronze 20/Box

    PMC 223 Rem 55 gr FMJ BT Bronze 20/Box
    $8.99
    ($0.45 / round)

  • Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box

    Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box
    $14.99
    ($0.75 / round)

  • Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box

    Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box
    $12.99
    ($0.65 / round)

  • Hornady 223 Rem 55 gr FMJ Frontier 20/Box

    Hornady 223 Rem 55 gr FMJ Frontier 20/Box
    $8.99
    ($0.45 / round)

  • PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box

    PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box
    $9.99
    ($0.50 / round)

  • Hornady 223 Rem 55 gr Hollow Point Match Frontier 20/Box

    Hornady 223 Rem 55 gr Hollow Point Match Frontier 20/Box
    $11.99
    ($0.60 / round)

  • Hornady 5.56 NATO 68 gr BTHP Match Frontier 20/Box

    Hornady 5.56 NATO 68 gr BTHP Match Frontier 20/Box
    $13.99
    ($0.70 / round)

  • Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box

    Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box
    $13.99
    ($0.70 / round)

  • Hornady 223 Rem 62 gr FMJ Black 20/Box

    Hornady 223 Rem 62 gr FMJ Black 20/Box
    $15.99
    ($0.80 / round)

  • AMEND2 MOD 2 AR-15 5.56 MM 30 RD BLACK MAG

    Amend2 AR15/M4 Mod.2 5.56 NATO 30 Round Magazine (Black)
    $14.99 $6.99

  • ATI SCHMEISSER S60 223/5.56MM 60-ROUND AR-15 MAGAZINE WITH WINDOW (GEN2)

    American Tactical Schmeisser S60 5.56 NATO 60 Round AR-15 Magazine with Window (Gen2)
    $84.95 $24.99

  • AMEND2 AR15 30RND 5.56MM NEON SPLATTER MAG

    Amend2 AR-15 5.56 NATO 30 Round Magazine with Neon Splatter Finish
    $14.99

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

    Magpul PMAG GEN M2 5.56 NATO 30 Round Black Magazine
    $12.95 $9.99

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

    Magpul PMAG 40 AR/M4 GEN M3 5.56 NATO 40 Round Magazine
    $21.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Black Magazine
    $16.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Black Magazine with Window
    $17.99

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

    Magpul PMAG GEN M2 5.56 NATO 30 Round Magazine with Window
    $15.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Coyote Tan AR/M4 Magazine with Window
    $17.99

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

    Magpul PMAG GEN M3 5.56 NATO 20 Round Black Magazine
    $13.99

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

    Magpul PMAG GEN M3 5.56 NATO 10 Round AR-15 Magazine
    $14.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Coyote Tan Magazine
    $16.99

Product Description

Whats in the Box

  • Sig MCX Patrol 5.56mm Semi-Automatic Rifle
  • (1) 30-Round Magazine
  • Cable Lock
  • Owners Manual

Unlike every other firearm on the market, the SIG MCX was built for optimum performance with the 300BLK cartridge and a silencer. The outcome is a firearm with superior suppression capability and enhanced reliability with both supersonic and subsonic loads A two-position gas block makes the transition from subsonic to supersonic as fast as flipping the lever. Changing between 300BLK and 5.56 NATO is as simple as swapping barrels and magazines in a matter of minutes. Converting to 7.62x39mm simply requires barrel, magazine, as well as an additional bolt change. Each SIG MCX features an aluminum KeyMod handguard, AR-style lower controls and utilizes polymer magazines. A revolutionary recoil system does not require a buffer tube, allowing for side-folding stocks. A picatinny top rail allows for the mounting of lights or optics. The aluminum forend allows for rail sections to be added where they are needed, permitting the attachment of accessories. The lower receiver offers familiar AR-style controls. Completely ambidextrous controls include the safety, magazine release and charging handle.

Firearm Specifications

  • Manufacturer: Sig Sauer
  • Model: MCX Patrol
  • Caliber: 5.56mm
  • Action Type: Semi Automatic
  • Operating System: Gas Piston; Rotating Bolt
  • Stock Type: Telescoping/Folding 5-Position
  • Forend Type: Alloy KeyMod
  • Barrel Length: 16"
  • Overall Length: 35.5"
  • Folded Length: 26.5"
  • Rifling: 1:7"
  • Trigger Type: Mil-Spec
  • Magazine Capacity: 30 Rounds
  • Weight: 6.9 lbs.

Customer Comments & Questions

Customer Reviews

(5 out of 5) Shoots as good as it looks!
by Trey from Southeast, TX on June 27, 2017

Wow what an awesome rifle. I've been wanting one since they came out but after the carrier recalls, I held out. This Gen 2 model has those issues fixed and performs flawlessly. My Sig 556 Classic was my favorite, but after running this one a few times, I think the MCX takes the cake. So many features, so damn sexy. Came with a free Romeo 4A Red Dot; did I mention it's lightweight? Anyways, SOSS ran the best deal on these I've ever seen, and their service along with free shipping is awesome! I'm very happy with my purchase and experience with SOSS!