Home > Shop By Brand > Sig Sauer > Parts & Maintenance > Uppers

Uppers


Products 1-20 of 20
Show
MCX RATTLER 5.5" Barrel 5.56 NATO Upper Assembly mcx rattler, mcx upper, 5.5" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly
Sig Sauer
MCX RATTLER 5.5" Barrel 5.56 NATO Upper Assembly
Retail: $1,999.99
Price: $1,699.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer Item #: SIG WUAMCX-5B-556-BLK-TAP -

MCX Upper 300 Blk Assembly mcx rattler, mcx upper, 5.5" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly
Sig Sauer
MCX Upper 300 Blk Assembly
Retail: $1,999.00
Price: $1,499.00-$1,549.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer

MCX-SPEAR LT 11.5 UPPER AR CONVERSION KIT 5.56 NATO mcx lt, mcx upper, 9" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 11.5" upper, Sig Sauer MCX 11.5" Upper
New!
Sig Sauer
MCX-SPEAR LT 11.5 UPPER AR CONVERSION KIT 5.56 NATO
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer

Adapts with any M4/AR15 Spec Lower AssemblyDual Rod Recoil Assembly Eliminates Buffer SystemM4 Adapter allows for Pic Rail Folding Stock CapabilitiesAdjustable Gas System for Suppressor OptimizationQuick Change Barrel Design allows to easily swap calibers and barrel lengthsGas Piston Design Reduces Part Exposure to Carbon FoulingDesigned to go 20k rounds before any part replacementsSLX/SLH Next Gen Suppressor Designed QD Flash Hider for Clutch-Lok AdaptabilityAmbidextrous Charging Handle with...

MCX-SPEAR LT 14.5" AR CONVERSION KIT 5.56 NATO mcx lt, mcx upper, 14.5" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 14.5" upper, Sig Sauer MCX 14.5" Upper
New!
Sig Sauer
MCX-SPEAR LT 14.5" AR CONVERSION KIT 5.56 NATO
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer

Adapts with any M4/AR15 Spec Lower AssemblyDual Rod Recoil Assembly Eliminates Buffer SystemM4 Adapter allows for Pic Rail Folding Stock CapabilitiesAdjustable Gas System for Suppressor OptimizationQuick Change Barrel Design allows to easily swap calibers and barrel lengthsGas Piston Design Reduces Part Exposure to Carbon FoulingDesigned to go 20k rounds before any part replacementsSLX/SLH Next Gen Suppressor Designed QD Flash Hider for Clutch-Lok AdaptabilityAmbidextrous Charging Handle with...

MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-BLACK mcx lt, mcx upper, 9" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 9" upper, Sig Sauer MCX 9" Upper
New!
Sig Sauer
MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-BLACK
Retail: $1,999.00
Price: $1,749.00
View
Availability:

In Stock
Sig Sauer Item #: SIG WUAMCXA-556N-16B-LT -

Thread pitch 1/2x28 Compatible with the following lowers: MCX, M400, 516, and any MIL-SPEC AR-15/M4.

MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-COYOTE mcx lt, mcx upper, 16" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 16" upper, Sig Sauer MCX 16" Upper
New!
Sig Sauer
MCX-SPEAR LT 16" AR CONVERSION KIT 5.56 NATO-COYOTE
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer Item #: SIG WUAMCXA-556N-16BLTCOY -

Thread pitch 1/2x28 Compatible with the following lowers: MCX, M400, 516, and any MIL-SPEC AR-15/M4.

MCX-SPEAR LT 6" AR CONVERSION KIT 300BLK mcx lt, mcx upper, 6" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 6" upper, Sig Sauer MCX 6" Upper, sig 300blk upper, 300blk upper assembly, sig 6" 300blk upper assembly
Sig Sauer
MCX-SPEAR LT 6" AR CONVERSION KIT 300BLK
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer Item #: SIG WUAMCXA-300B-6B-LT -

Thread pitch 1/2 x  28 Compatible with the following lowers: MCX, M400, 516, and any MIL-SPEC AR-15/M4.

MCX-SPEAR LT 9" AR CONVERSION KIT 300BLK mcx lt, mcx upper, 9" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 9" upper, Sig Sauer MCX 9" Upper
New!
Sig Sauer
MCX-SPEAR LT 9" AR CONVERSION KIT 300BLK
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer

Thread pitch 5/8 in - 24 Compatible with the following lowers: MCX, M400, 516, and any MIL-SPEC AR-15/M4.

MCX-SPEAR LT 9" AR CONVERSION KIT 5.56 NATO- BLK mcx lt, mcx upper, 9" upper assembly, sig mcx, sig mcx upper, sig mcx upper assembly, sig mcx lt upper, sig lt 9" upper, Sig Sauer MCX 9" Upper
Sig Sauer
MCX-SPEAR LT 9" AR CONVERSION KIT 5.56 NATO- BLK
Retail: $1,999.00
Price: $1,749.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer Item #: SIG WUAMCXA-556N-9B-LT -

Thread pitch 1/2 x  28 Compatible with the following lowers: MCX, M400, 516, and any MIL-SPEC AR-15/M4.

P226 9MM 4.4" SLIDE ASSEMBLY, ROMEO-X PRO, BLACK sig, sig sauer, sig sauer optics, sig optics, sig p226, sig p226 optics, sig p226 slide assembly, p226 slide assembly, p266 romeo x, sig p226 romeox
Featured!
New!
Sig Sauer
P226 9MM 4.4" SLIDE ASSEMBLY, ROMEO-X PRO, BLACK
Retail: $699.99
Price: $530.00
View
Availability: Out Of Stock / Not Available For Back Orders
Sig Sauer Item #: SIG 8901630 -

    SKU8901630ModelP226Caliber9mm LugerColorBlackApplicationSelf-Defense, Target Shooting, Concealed Carry, Everyday Carry (EDC), Competition Shooting, Law Enforcement / Military, Tactical, RangeLoaded Chamber IndicatorNoBarrel IncludedNoRecoil Assembly IncludedNoBarrel Length (In)4.4SightsROMEO-X PRO w/ XRAY3 Day/Night SightsOptic ReadyYesRX FootprintPROElectro-Optic InstalledYesCenter Dot Size2 MOA Red Dot / 32 MOA CirclePistol SizeFull-SizeSlide FinishNitron®Slide MaterialStainless...

    P320 3.6" SLIDE ASSEMBLY, SUPPRESSOR SIGHTS, OPTIC READY - COYOTE P320 Slide Assembly
    Sig Sauer
    P320 3.6" SLIDE ASSEMBLY, SUPPRESSOR SIGHTS, OPTIC READY - COYOTE
    Retail: $349.99
    Price: $275.00
    View
    Availability: Out Of Stock / Not Available For Back Orders
    Sig Sauer Item #: SIG 8900960 -

    P320 3.9" SLIDE ASSEMBLY, SUPPRESSOR SIGHTS, OPTIC READY - COYOTE BROWN sig, sig sauer, sig p320, sig sauer p320, sig p320 slide, p320 slide assembly, sig p320 slide assembly.
    Sig Sauer
    P320 3.9" SLIDE ASSEMBLY, SUPPRESSOR SIGHTS, OPTIC READY - COYOTE BROWN
    Retail: $349.99
    Price: $275.00
    View
    Availability: Out Of Stock / Not Available For Back Orders
    Sig Sauer Item #: SIG 8900961 -

    P320 FULL-SIZE 9MM 4.7" SLIDE ASSEMBLY, ROMEO-X PRO, BLACK sig, sig sauer, sig optic, sig slide, sig romeo x, sig romeox, sig romeox slide, romeox slide assembly, P320 Slide Assembly
    Featured!
    New!
    Sig Sauer
    P320 FULL-SIZE 9MM 4.7" SLIDE ASSEMBLY, ROMEO-X PRO, BLACK
    Retail: $699.99
    Price: $519.00
    View
    Availability: Out Of Stock / Not Available For Back Orders
    Sig Sauer Item #: SIG WSLIDE-320F-9-BXR3RXX -

    Barrel Compatibility: 9MMFinish: Black *Note, only for use on 9mm/ .357SIG / .40S&W fire control units (FCU). It will not function with a .45 ACP FCU.

    P320-XFIVE PRO-CUT FULL-SIZE 9MM 5" COMPLETE SLIDE ASSEMBLY, OPTIC READY, BLACK sig, sig sauer, sig optic, sig slide, sig slide assembly, sig p320 xfive, P320 Slide Assembly
    Sig Sauer
    P320-XFIVE PRO-CUT FULL-SIZE 9MM 5" COMPLETE SLIDE ASSEMBLY, OPTIC READY, BLACK
    Retail: $599.99
    Price: $469.00
    View
    Availability: Out Of Stock / Not Available For Back Orders
    Sig Sauer Item #: SIG 8901572 -

    Included: Complete slide assembly, 5.0" barrel, guide rod, and (2) recoil springs.Grip module compatibility: Both the full size X and non-X series. Only for use on 9mm/.357SIG/.40S&W fire control units (FCU). It will not function with a .45ACP FCU.Holster compatibility: Fits P320-XFIVE holsters.Slide material: Stainless SteelFinish: Slide- Black Nitron. Barrel Black Nitron. Comes fully assembled. ...

    SLIDE, 320, 3.6IN, 9, XRAY3, ROMEO-X sig, sig sauer, sig optic, sig slide, sig romeo x, sig romeox, sig romeox slide, romeox slide assembly, P320 Slide Assembly
    Sig Sauer
    SLIDE, 320, 3.6IN, 9, XRAY3, ROMEO-X
    Retail: $699.99
    Price: $519.00
    View
    Availability:

    In Stock
    Sig Sauer Item #: SIG WSLIDE-320C-9-BXR3RXX -

    Barrel Compatibility: 9MMFinish: Black *Note, only for use on 9mm/ .357SIG / .40S&W fire control units (FCU). It will not function with a .45 ACP FCU.

    SLIDE, 320, 3.9IN, 9, NIGHT SIGHT, SD HEIGHT, SIGHT PLATE, R2 OPTIC READY
    Sig Sauer
    SLIDE, 320, 3.9IN, 9, NIGHT SIGHT, SD HEIGHT, SIGHT PLATE, R2 OPTIC READY
    Retail: $349.99
    Price: $269.00
    View
    Availability:

    In Stock
    Sig Sauer Item #: SIG WSLIDE-320XCA-9-BSSSD -

    SLIDE, 320, 3.9IN, 9, XRAY3, ROMEO-X sig, sig sauer, sig optic, sig slide, sig romeo x, sig romeox, sig romeox slide, romeox slide assembly, P320 Slide Assembly
    Sig Sauer
    SLIDE, 320, 3.9IN, 9, XRAY3, ROMEO-X
    Retail: $699.99
    Price: $519.00
    View
    Availability:

    In Stock
    Sig Sauer Item #: SIG WSLIDE-320CA-9BXR3RXX -

    Barrel Compatibility: 9MMFinish: Black *Note, only for use on 9mm/ .357SIG / .40S&W fire control units (FCU). It will not function with a .45 ACP FCU.

    SLIDE, 320, 3.9IN, 9, XRAY3, SIGHT PLATE, R2 OPTIC READY
    Sig Sauer
    SLIDE, 320, 3.9IN, 9, XRAY3, SIGHT PLATE, R2 OPTIC READY
    Retail: $349.99
    Price: $269.00
    View
    Availability:

    In Stock
    Sig Sauer Item #: SIG WSLIDE-320XCA-9-BXR3 -

    SLIDE,365,3.1",9,XRAY3,ROMEOX sig, sig sauer, sig optic, sig slide, sig romeo x, sig romeox, sig romeox slide, romeox slide assembly, P336 Slide Assembly
    Featured!
    Sig Sauer
    SLIDE,365,3.1",9,XRAY3,ROMEOX
    Retail: $649.99
    Price: $479.00
    View
    Availability:

    In Stock
    Sig Sauer Item #: SIG WSLIDE-365-9-BXR3-RXX -

    UPPER RECEIVER ASSEMBLY-BLACK sig, sig sauer, sig sauer mcx, sig sauer mcx spear, mcx spear lt upper, sig mcx spear lt upper, MCX Spear LT Upper
    Sig Sauer
    UPPER RECEIVER ASSEMBLY-BLACK
    Retail: $599.99
    Price: $450.00
    View
    Availability: Out Of Stock / Not Available For Back Orders
    Sig Sauer Item #: SIG 8901271 -

    Factory upper receiver assembly for the MCX-SPEAR LT. Assembled upper includes ejection port cover, barrel clamps, cam path insert, barrel clamp screws, forward assist with deflector. Does not include barrel, handguard, or bolt assembly. ...