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    SBR Barrels & Upper Receivers

    Are you looking for SBR barrels? K-Var has your back. Need SBR upper receivers? We've got you covered there, too. Many gun owners turn to SBRs for personal defense and competitive shooting, drawn to the small form factor for tight quarters and portability. Our SBR barrels and upper receivers can get you the build you need. We carry manufacturers you can trust, including Daniel Defense, Sig Sauer, Diamondback and Primary Weapons Systems. For SBR upper receivers and barrels, look no further than K-Var.

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      6 products found.

      Rise Armament Barrel, 300 Blackout, 10.5", Black

      RISEBK105300BLK
      $234.00 $229.00

      IO UPPER RECEIVER 5.56NATO 7.5" MLOK

      IOAARUML7
      $349.99 $271.99

      PWS MK1MOD1 UPPER 7.75" .223WYLDE

      PWS18-M107UA0B
      $1,049.95 $892.40

      DD BBL ASSY 300BLK 1-8 CHF 10.3" CAR

      DD36-116-06041-018
      $298.00 $283.00

      SIG MCX RATTLER UPPER 300BLK 5.5"

      SGUAMCX-5B-300-BLK-TAP
      $1,799.00 $1,521.99

      DMNDBK BBL 556 10.5" CARB MED MEL

      DBB556C105M50B9
      $89.99 $82.99