• join email
  • contact
My account Find a store
Home Page
  • join email
  • contact
  • Account
  • Cart (0)
  • ammo
    • pistol/handgun
    • rifle
    • rimfire
    • shotgun
  • firearms
    • lower receivers
      • ar10
      • ar15
    • pistols
    • revolvers
    • rifles
      • bolt action
      • semi-auto
      • short barrel rifles(sbr)
    • shotguns
      • break-action
      • pump-action
      • semi-auto
      • short barrel shotguns(sbs)
    • unique
    • suppressors
      • rimfire suppressors
      • handgun suppressors
      • rifle suppressors
      • shotgun suppressors
      • suppressor accessories
    • air guns
      • air pistols
      • air rifles
      • accessories
  • le-mil programs
    • beretta
      • pistols
      • rifles
      • shotguns
    • iwi
      • pistols
      • rifles
      • shotguns
      • suppressors
    • sig sauer
      • pistols
      • rifles
      • suppressors
    • smith & wesson
      • pistols
      • revolvers
      • rifles
      • shotguns
    • springfield armory
      • pistols
      • rifles
  • parts & acc.
    • apparel/gear
    • barrels & caliber exchange kits
    • bipods
    • cleaning & tools
    • eye/ear pro
    • flashlights
      • handheld/headlamps
      • weapon lights
      • accessories
    • grip modules
    • grips & accessories
    • handguards & accessories
    • holsters
    • magazines
      • pistol
      • rifle
      • shotgun
      • accessories
    • misc parts/accessories
    • novelty
    • sights
    • slides
    • slings
    • stocks & adapters
    • stabilizing braces
    • storage/bags/cases
    • targets/range accessories
    • triggers
    • uppers
  • optics
    • laser sights
    • magnified
    • magnifiers
    • monoculars/binoculars
    • mounts
    • rangefinders
    • red dots
    • spotting scopes
    • accessories
  • knives
  • state compliant
    • ca
    • cn
    • co
    • dc
    • de
    • hi
    • il
    • ma
    • md
    • nj
    • ny
    • vt
    • wa
  • closeouts
Sign in


Show Password
Sign in Forgot Your Password?

Sign up

Welcome! It's quick and easy to set up an account

Create an account
Home Page
SHOP SHOP
Home Parts & Acc. Barrels & Caliber Exchange Kits Sig Sauer, Glock

Barrels & Caliber Exchange Kits

Clear All
Stock Status
  • In Stock
  • Out of Stock
Categories
  • Ammo
    • Pistol/Handgun (42)
    • Rifle (32)
    • Rimfire (4)
    • Shotgun (7)
  • Closeouts
  • Firearms
    • Air Guns (32)
    • Lower Receivers (22)
    • Pistols (252)
    • Revolvers (5)
    • Rifles (129)
    • Shotguns (93)
    • Suppressors (71)
    • Unique (4)
  • Knives
  • LE-Mil Programs
    • Beretta (26)
    • IWI (52)
    • Sig Sauer (127)
    • Smith & Wesson (43)
    • Springfield Armory (53)
  • Optics
    • Accessories (57)
    • Laser Sights (2)
    • Magnified (71)
    • Magnifiers (17)
    • Monoculars/Binoculars (19)
    • Mounts (73)
    • Red Dots (109)
    • Spotting Scopes (8)
  • Parts & Acc.
    • Apparel/Gear (16)
    • Barrels & Caliber Exchange Kits (70)
    • Bipods (9)
    • Cleaning & Tools (72)
    • Eye/Ear Pro (18)
    • Flashlights (142)
    • Grip Modules (54)
    • Grips & Accessories (77)
    • Handguards & Accessories (136)
    • Holsters (48)
    • Magazines (429)
    • Misc Parts/Accessories (139)
    • Novelty (48)
    • Sights (28)
    • Slides (34)
    • Slings (59)
    • Stabilizing Braces (20)
    • Stocks & Adapters (147)
    • Storage/Bags/Cases (72)
    • Targets/Range Accessories (18)
    • Triggers (85)
    • Uppers (23)
    • Show More
  • State Compliant
    • CA (150)
    • CN (153)
    • CO (224)
    • DC (153)
    • DE (255)
    • HI (153)
    • IL (224)
    • MA (153)
    • MD (154)
    • NJ (154)
    • NY (153)
    • VT (153)
    • WA (153)
    • Show More
  • Deals
Brands
  • Glock (1)
  • Lewis Machine Tool (2)
  • Mossberg (3)
  • Radian Weapons (4)
  • Sig Sauer (59)
  • Surefire (1)
PRICE

    Filters
    3 2 1
    Select up to four products to compare, then click Compare Products Now
    Compare Products Now
  • Quick View
    Barrel, P229, P228, 9mm, 3.9
    Sig Sauer BARREL, P229, P228, 9MM, 3.9", THREADED(M13.5X1LH), NOT COMPATIBLE REPLACEMENT FOR P229-1, ONLY OLDER P229/228 MODELS Item # SIG BBL-229-9-T $179.00
  • Quick View
    Barrel, P365/P365X, 9mm, 3.1
    Sig Sauer BARREL, P365/P365X, 9MM, 3.1", WITH LOADED CHAMBER INDICATOR Item # SIG BBL-365-9 $139.00
  • Quick View
    Barrel, P938, 9mm, 3
    Sig Sauer BARREL, P938, 9MM, 3" Item # SIG BBL-938-9 $139.00
  • Quick View
    Barrel, P226, 9mm, 4.4
    Sig Sauer BARREL, P226, 9MM, 4.4", CHROME/PHOSPHATE Item # SIG BBL-MK25 $139.00
  • Quick View
    Barrel, P226, 9mm, 126mm/4.9
    Sig Sauer BARREL, P226, 9MM, 126MM/4.9", CHROME/PHOSPHATE, THREADED(M13.5X1LH) Item # SIG BBL-MK25-T $169.00
  • Quick View
    Barrel, P320, .357 SIG, 3.9
    Sig Sauer BARREL, P320, .357 SIG, 3.9", COMPACT, DLC, NO LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-C-357 $139.00
  • Quick View
    Barrel, P320, .40 S&W, 3.9
    Sig Sauer BARREL, P320, .40 S&W, 3.9", COMPACT, DLC, NO LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-C-40 $139.00
  • Quick View
    Barrel, P320, 9mm, 3.9
    Sig Sauer BARREL, P320, 9MM, 3.9", COMPACT/CARRY/XCARRY, CIP, WITH LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-C-9 $139.00
  • Quick View
    Barrel, P320, 9mm, 4.6
    Sig Sauer BARREL, P320, 9MM, 4.6", COMPACT/CARRY/XCARRY, THREADED(M13.5X1LH), NO LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-C-9-TB $179.00
  • Quick View
    Barrel, P320, 40SW, 4.7
    Sig Sauer BARREL, P320, 40SW, 4.7", FULL, DLC, NO LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-F-40 $139.00
  • Quick View
    Barrel, P320, 9mm, 4.7
    Sig Sauer BARREL, P320, 9MM, 4.7", FULL, CIP, WITH LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-F-9 $139.00
  • Quick View
    Barrel, P320, 9mm, 3.6
    Sig Sauer BARREL, P320, 9MM, 3.6", SUBCOMPACT/XCOMPACT, CIP, WITH LOADED CHAMBER INDICATOR Item # SIG BBL-MOD-SC-9 $139.00
  • Quick View
    MPX G2 4.5
    Sig Sauer MPX G2 4.5" BARREL - 9MM Item # SIG CALX-MPX-4B-9-G2 $640.00
  • Quick View
    MPX G2 6.5
    Sig Sauer MPX G2 6.5" BARREL - 9MM Item # SIG CALX-MPX-6B-9-G2 $510.00
  • Quick View
    MPX G2 8
    Sig Sauer MPX G2 8" BARREL - 9MM Item # SIG CALX-MPX-8B-9-G2 $639.00
  • Quick View
    XSeries P320CA Slide Assembly 9mm w/ Optic Ready Suppressor Height Sights & Threaded Barrel
    Sig Sauer XSERIES P320CA SLIDE ASSEMBLY 9MM W/ OPTIC READY SUPPRESSOR HEIGHT SIGHTS & THREADED BARREL Item # SIG WCALX-320XCA-9-BXR3-TB $399.00
  • Quick View
    MCX SPEAR LT 9
    Sig Sauer MCX SPEAR LT 9" CALIBER EXCHANGE KIT - 300BLK Item # SIG WCALX-MCX-300B-9B-LT $729.00
  • Quick View
    CAL-X KIT, SIGMCX, 5.56 NATO, 11.5IN, LT
    Sig Sauer CAL-X KIT, SIGMCX, 5.56 NATO, 11.5IN, LT Item # SIG WCALX-MCX-556N-11B-LT $729.00
  • Quick View
    CAL-X KIT, SIGMCX, 5.56 NATO, 14.5IN, LT
    Sig Sauer CAL-X KIT, SIGMCX, 5.56 NATO, 14.5IN, LT Item # SIG WCALX-MCX-556N-14B-LT $729.00
  • Quick View
    CAL-X KIT, SIGMCX, 5.56 NATO, 16IN, LT
    Sig Sauer CAL-X KIT, SIGMCX, 5.56 NATO, 16IN, LT Item # SIG WCALX-MCX-556N-16B-LT $729.00
  • Quick View
    MCX SPEAR LT 9
    Sig Sauer MCX SPEAR LT 9" CALIBER EXCHANGE KIT - 5.56 NATO Item # SIG WCALX-MCX-556N-9B-LT $729.00
  • Quick View
    MCX Rattler 5.5
    Sig Sauer MCX RATTLER 5.5" CALIBER EXCHANGE KIT - 300BLK Item # SIG WCALX-MCX-5B-300-TAP $729.00
  • Quick View
    MCX Rattler 5.5
    Sig Sauer MCX RATTLER 5.5" CALIBER EXCHANGE KIT - 5.56 Item # SIG WCALX-MCX-5B-556-TAP $729.00
  • Quick View
    MCX Rattler, 5.5
    Sig Sauer MCX RATTLER, 5.5" BARREL, 300 BLK, UPPER ASSEMBLY Item # SIG WUAMCX-5B-300B-BLK-TAP $1,699.00
  • 3 2 1

BE THE FIRST TO KNOW

SIGN-UP FOR BRAND UPDATES AND NEWS ON OUR LATEST PRODUCTS.

Join email List

Info

Retail Store About Us LE-MIL Program Info FAQs FFL Locator Check Shipping Status Rebates & Promotion The Exchange, A Blog

Contact Us

910.637.0500 info@ProvenOutfitters.com

© 2025 Proven Arms & Outfitters. All Rights Reserved.

Legal

Privacy Policy Retail Return Policy Terms & Conditions Shipping Restrictions
Modal title
logo

Our site is for individuals 18 years of age of older.

Are you at least 18 years old?