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Sig Sauer MCX Rattler LT | 5.56 NATO | PMCX-556N-7B-LT-PCB

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Sig Sauer MCX Rattler LT pistol in .223 Rem / 5.56 NATO with an M-LOK handguard, folding pistol brace, SIG QD suppressor-ready flash hider and one 30‑round magazine. Suited for close-range target work and pistol-caliber competition stages.

The Sig Sauer MCX Rattler LT is a compact, modular AR-style pistol chambered in .223 Rem / 5.56 NATO that emphasizes ambidextrous controls and modular compatibility with MCX components. It ships with an M-LOK handguard, a folding pistol brace, a SIG QD suppressor-ready flash hider, and one 30‑round magazine. For a practical optic choice under $1,000 that retains rapid target acquisition on a short-barreled platform, consider a 1x red-dot such as the Vortex SPARC AR. Typical applications include close-range target shooting and competitive pistol-carbine stages.

Product Specifications

  • The manufacturer part number is PMCX-556N-7B-LT-PCB.
  • The caliber is .223 Rem / 5.56 NATO.
  • The action is Semi-Auto.
  • The firearm ships with one 30‑round magazine.
  • The optic footprint is PICATINNY.
  • The handguard style is M-LOK.
  • The muzzle device is a SIG QD suppressor-ready flash hider.
  • The frame material is aluminum (alloy).
  • The finish is black.
  • The grip material is rubber.
  • The stock type is a folding pistol brace.
  • The magazine type is removable and the package includes 1 x 30‑round.
  • The listed weight is 88 ounces.
  • The safety type is listed as thumb.
  • The UPC is 798681699766.

The MCX Rattler LT pairs modular MCX compatibility with user-focused controls: fully ambidextrous controls, an adjustable gas piston for suppressed or unsuppressed use, and a flat-blade trigger for consistent trigger break. Its compact footprint and M-LOK handguard provide room for accessories while remaining maneuverable for close-range work and competition use. If you value a compact, well-dressed AR pistol chassis that integrates modern features without excess, the MCX Rattler LT delivers a capable, adaptable foundation for a wide range of short-barrel applications.

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SKU: TGD|SIG_PMCX-556N-7B-LT-PCB Category: Brand:

Product Information

SKU TGD|SIG_PMCX-556N-7B-LT-PCB
UPC 798681699766
Manufacturer SIG SAUER
Manufacturer Part Number SIG PMCX-556N-7B-LT-PCB
Action Semi-Auto
ATF Type Pistol
Barrel Length 7.75"
Caliber/Gauge .223 REM/5.56 NATO
Capacity 30
Length 27.19''
Magazine Included 1 x 30-Round
Model MCX
Number of Magazines 1
Package Height 4.1
Package Width 11.3
Product Type AR
Rate of Twist 1-in-7"
Safety Thumb
Shipping Weight 8.6
Sights Type NONE
State Restriction (CA) NO DIRECT SHIP TO CALIFORNIA
State Restriction (RI) NO DIRECT SHIP TO RHODE ISLAND
State Restriction (WA) NO DIRECT SHIP TO WASHINGTON
UPC798681699766
ManufacturerSIG SAUER
Manufacturer Part NumberSIG PMCX-556N-7B-LT-PCB
ActionSemi-Auto
ATF TypePistol
Barrel Length7.75"
Caliber/Gauge.223 REM/5.56 NATO
Capacity30
Length27.19''
Magazine Included1 x 30-Round
ModelMCX
Number of Magazines1
Package Height4.1
Package Width11.3
Product TypeAR
Rate of Twist1-in-7"
SafetyThumb
Shipping Weight8.6
Sights TypeNONE
State Restriction (CA)NO DIRECT SHIP TO CALIFORNIA
State Restriction (RI)NO DIRECT SHIP TO RHODE ISLAND
State Restriction (WA)NO DIRECT SHIP TO WASHINGTON
Disclaimer: Our e-commerce site uses stock images for item photography. In most cases, these are completely accurate however there are some cases where the image may not wholly reflect the item being purchased. It is your responsibility to verify the UPC of the item you are purchasing from us with the manufacturer to confirm you are placing an order for the correct item.