Skip to content
Skip to navigation Skip to content
Your Cart

Most Orders Over $200 Ship FREE!

Order by 3PM Central for Same Day Shipping

Earn cashback with every order! Learn more.

Rooftop Defense
  • My Account
  • Support
  • Checkout
$0.00 0
  • Guns & NFA
    • Complete Rifles
    • AR Lower Receivers
      • Stripped Lowers
      • Complete Lowers
      • Receiver Sets
    • Handguns
      • Rooftop Essentials Glocks
      • 9mm
      • .45 Auto
      • 10mm Auto
    • NFA
      • Short-Barreled Rifles
      • Suppressors
      • Suppressor Parts
      • M203
  • Mags
    • 5.56/300BLK
    • SR25/AR10
    • 6mm ARC
    • AK
    • Handgun
    • PCC & Subgun
    • Parts & Accessories
  • Ammo
  • Parts & Accessories
    • AR Lower Parts
      • Buffers & Buffer Tubes
      • Lower Parts Kits
      • Other Lower Parts
      • Pistol Grips
      • Safety Selectors
      • Springs
      • Stocks
      • Triggers
      • Trigger Guards
    • AR Uppers
      • Upper Receivers
        • — AR15/M4
        • — LMT MRP
      • Barreled Upper Receivers
      • Complete Upper Groups
    • AR Upper Parts
      • Barrels
        • — AR15/M4
        • — LMT MRP
      • Muzzle Devices
        • — 5.56 & .223
        • — 7.62 & .30
        • — Blast Diffusers
      • Bolt Carrier Groups
      • Bolts & BCG Parts
      • Charging Handles
      • Rails & Handguards
        • — Drop In
        • — MLOK
        • — 1913 Picatinny
        • — ARCA Compatible
      • Other Upper Parts
    • Accessories
      • Grips & Stops
      • Slings
      • Sling Mounts & Accessories
      • Bipods & Accessories
    • SR-25, MWS & AR10
      • MWS Barrels
      • Bolt Carrier Groups & Parts
      • Charging Handles
      • Other SR-25/MWS Parts
      • LMT MWS Uppers
      • KAC SR-25 Uppers
      • AR10 Uppers
      • AR10 Barrels
  • Lights
    • Weaponlights
    • Handheld Lights
    • Heads & Bodies
    • Switches & Accessories
    • Light Mounts
    • Batteries & Chargers
    • Battery Storage
  • Sights & Optics
    • Optics
    • LPVO & Scope Mounts
      • 30mm
      • 34mm
      • 35mm
    • Mount Accessories
      • 30mm
      • 34mm
      • 35mm
    • Red Dot Mounts & Risers
    • Iron Sights
    • IR Devices
  • Gear
    • Medical
    • Holsters
    • Belt & Range
    • Long Range & PRS
    • Storage
    • Helmets
    • Helmet Accessories
    • Hearing Protection & Comms
    • Apparel
  • Cleaning, Lube & Tools
    • Cleaning
    • Lubrication
    • Tools
    • Refinishing
  • Glock Parts
    • Gen 3
    • Gen 4
    • Gen 5
    • Gen 6
    • Slimline
    • Sights
    • MOS Optic Plates
  • HK Parts
    • USP
    • MP5 & MP5K
    • MP7
    • HK416 & MR556
    • HK417 & MR762
  • Other Gun Parts
    • Shotguns
    • Ruger RXM
    • CZ Scorpion EVO 3
    • AK
    • Tavor & X95
  • Brands
    • Brands A-D
      • Agency Arms
      • Aimpoint
      • ALG Defense
      • Allen Engineering
      • Ameriglo
      • Arisaka Defense
      • B5 Systems
      • Badger Ordnance
      • BE Meyers
      • Birchwood Casey
      • Black Hills Ammunition
      • Black River Tactical
      • Blue Force Gear
      • Bravo Company Mfg
      • Centurion Arms
      • Colt Manufacturing
      • CompMag
      • Criterion Barrels
      • Daniel Defense
      • Dead Air
    • Brands E-K
      • Edgar Sherman Design
      • EOTech
      • Esstac
      • Evolve Weapons Systems
      • Flatline Fiber Co
      • FN
      • Forward Controls Design
      • Geissele Automatics
      • Glock
      • Heckler & Koch
      • Hodge Defense
      • Hoppe’s
      • HRF Concepts
      • HUXWRX
      • Icon Defense
      • Kinetic Consulting
      • Knight’s Armament
    • Brands L-Q
      • LaRue Tactical
      • LMT Defense
      • Lucas Oil
      • LWRC
      • Magpul
      • Mec-Gar
      • Mega Arms
      • Microbest
      • Midwest Industries
      • Modlite
      • MultiTasker
      • North American Rescue
      • Noveske Rifleworks
      • Ops-Core
      • Otis Technology
      • PHLster
      • Precision Armament
      • Precision Reflex, Inc.
      • Primary Weapons Systems
      • Primatia
    • Brands R-Z
      • Radian Weapons
      • Reptilia Corp
      • Revival Defense
      • Rooftop Defense
      • Safariland
      • Scalarworks
      • Sentry Manufacturing
      • Shield Arms
      • Sig Sauer
      • SilencerCo
      • Sons of Liberty Gun Works
      • Sprinco USA
      • Surefire
      • Thyrm
      • Trijicon
      • Truglo
      • Unity Tactical
      • VLTOR
      • Wheeler Engineering
      • ZEV Technologies
  • Training
  • Support
    • Heroes Program
    • CA Order Verification
    • Sweatshop Cashback
    • About
    • Contact Us
    • Make a Return

Browse

  • My Account
  • Customer Support

Want to chat?

Contact Us

Social

  • Facebook
  • Instagram
  • YouTube
$0.00 0

All inventory is live; if it’s in-stock, it’s ready to ship!

Barrels

Home / All AR Upper Parts / Barrels

Showing 1–18 of 86 results

  • 1
  • 2
  • 3
  • 4
  • 5
  • →
  • Criterion Core 14.5" .223 Wylde Midlength Barrel, 1:8 Twist

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 14.5"

    Criterion Core 14.5″ .223 Wylde Midlength Barrel, 1:8 Twist
    Rated 4.82 out of 5
    $313.49 Add to Cart
  • Criterion Core 16" .223 Wylde Midlength Barrel, 1:8 Twist

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 16"

    Criterion Core 16″ .223 Wylde Midlength Barrel, 1:8 Twist
    Rated 5.00 out of 5
    $313.49 Add to Cart
  • Criterion Core 13.9" .223 Wylde Midlength Barrel, 1:8 Twist

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 13.7" & 13.9"

    Criterion Core 13.9″ .223 Wylde Midlength Barrel, 1:8 Twist
    Rated 5.00 out of 5
    $313.49 Add to Cart
  • LMT MRP 14.5" 5.56 Midlength Barrel

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 14.5″ 5.56 Midlength Barrel
    Rated 5.00 out of 5
    $554.40 Add to Cart
  • Daniel Defense 14.5" 5.56 Hammer-Forged Midlength Barrel w/ Pre-Drilled & Pinned Gas Block

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 14.5"

    Daniel Defense 14.5″ 5.56 Hammer-Forged Midlength Barrel w/ Pre-Drilled & Pinned Gas Block
    Rated 5.00 out of 5
    $424.00 Add to Cart
  • LMT MRP 11.5" 5.56 Carbine Barrel

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 11.5″ 5.56 Carbine Barrel
    Rated 5.00 out of 5
    $554.40 Add to Cart
  • LMT MRP 16" 5.56 Midlength Barrel

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 16″ 5.56 Midlength Barrel
    Rated 5.00 out of 5
    $554.40 Add to Cart
  • LMT MRP 10.5" .300 Blackout Barrel

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 10.5″ .300 Blackout Barrel
    Rated 5.00 out of 5
    $554.40 Add to Cart
  • LMT MRP 14.5" 5.56 Piston Barrel, Gen 2

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 14.5″ 5.56 Piston Barrel, Gen 2
    Rated 5.00 out of 5
    $716.85 Add to Cart
  • Stock photo of the Criterion Core 8.5 300BLK Pistol Barrel

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 8.5"

    Criterion Core 8.5″ 300BLK Barrel, 1:7 Twist
    $313.49 Add to Cart
  • Sons of Liberty Gun Works 13.7" 5.56 Midlength Combat Barrel, V2 Profile

    13.7" & 13.9", All AR Upper Parts, AR15/M4 Barrels, Barrels

    Sons of Liberty Gun Works 13.7″ 5.56 Midlength Combat Barrel, V2 Profile
    Rated 5.00 out of 5
    $189.05 Add to Cart
  • Sons of Liberty Gun Works 11.5" .223 Wylde Liberty Fighting Barrel

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 11.5"

    Sons of Liberty Gun Works 11.5″ .223 Wylde Liberty Fighting Barrel
    Rated 4.67 out of 5
    $199.00 Add to Cart
  • Criterion Core 18" .223 Wylde Rifle Barrel, 1:8 Twist

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 18"

    Criterion Core 18″ .223 Wylde Rifle Barrel, 1:8 Twist
    Rated 3.67 out of 5
    $313.49 Add to Cart
  • LMT 14.5", 5.56 M4 Barrel w/ FSB and Barrel Nut

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 14.5"

    LMT 14.5″, 5.56 M4 Barrel w/ FSB and Barrel Nut
    Rated 5.00 out of 5
    $428.40 Add to Cart
  • Sons of Liberty Gun Works 16" 5.56 Midlength Combat Barrel, V2 Profile

    16", All AR Upper Parts, AR15/M4 Barrels, Barrels

    Sons of Liberty Gun Works 16″ 5.56 Midlength Combat Barrel, V2 Profile
    $189.05 Add to Cart
  • LMT MRP 16" 5.56 Piston Barrel, Gen 2

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 16″ 5.56 Piston Barrel, Gen 2
    Rated 5.00 out of 5
    $716.85 Add to Cart
  • Criterion HBAR 18" .223 Wylde Rifle Gas Barrel, 1:8 Twist

    All AR Upper Parts, Barrels, AR15/M4 Barrels, 18"

    Criterion HBAR 18″ .223 Wylde Rifle Gas Barrel, 1:8 Twist
    Rated 5.00 out of 5
    $313.49 Add to Cart
  • LMT MRP 9" .300 Blackout Barrel

    All AR Upper Parts, Barrels, LMT MRP Barrels

    LMT MRP 9″ .300 Blackout Barrel
    $554.40 Add to Cart

Showing 1–18 of 86 results

  • 1
  • 2
  • 3
  • 4
  • 5
  • →
Shop by Brand
Product categories
  • Ruger RXM
  • Shotgun Parts & Accessories
  • Cleaning, Lubrication & Tools
  • HK Parts
  • KAC Things
  • LMT Fan Favorites
  • Tavor & X95
  • Yard Sale
  • Accessories
  • All AR Upper Parts
    • Barrels
      • AR15/M4 Barrels
      • LMT MRP Barrels
    • Bolt Carrier Groups
    • Bolts & BCG Parts
    • Charging Handles
    • Muzzle Devices
    • Other Upper Parts
    • Rails & Handguards
  • All AR Upper Receivers
  • Ammo
  • Apparel
  • AR Lower Parts
  • AK
  • Glock Parts
  • Gear
  • Guns and NFA
  • Lights
  • Magazines
  • CZ Scorpion EVO 3
  • Sights and Optics
  • SR-25, MWS & AR10
  • CX
  • HX
  • Uncategorized

STORE

  • Home
  • About
  • Support
  • Heroes Program

ACCOUNT

  • account
  • privacy policy
  • terms and conditions

FOLLOW

  • Instagram
  • Youtube
  • Facebook
  • Reddit

SIGN UP

Sign up for our mailing list to be the first to know when new deals drop!

Home of the Fastest Sweatshop in the West

© Rooftop Defense 2026. All Rights Reserved.

STORE

  • Home
  • About
  • Support
  • Heroes Program

ACCOUNT

  • account
  • privacy policy
  • terms and conditions

FOLLOW US

  • Instagram
  • Youtube
  • Facebook
  • Reddit

SIGN UP

Sign up for our mailing list to be the first to know when new deals drop!

Home of the Fastest Sweatshop in the West

© Copyright Rooftop Defense 2025. All Rights Reserved.