Call of Duty Modern Warfare 3 (MW3) Walkthrough & Guides Wiki

Call of Duty Modern Warfare 3 (MW3)

List of All Barrels

★ S6 New Guns: DTIR 30-06 | Kastov LSW
☆ S5 Reloaded Dark Aether Keys and Locations
★ Mr. Peeks | Drum | Locked Diary | Giraffe Toy
☆ Final MWZ Story Mission: Ascension Walkthrough
★ Zombies Map | Dark Aether Interactive Map
☆ Rarity vs Pack-a-Punch Damage Chart

Barrels modify the effective range of your gun in Modern Warfare 3 (MW3). Read on for a full list of all Barrel attachments in MW3 and learn how to equip Barrels for your gun, in-game.

List of Contents

List of All Barrels

Attachment How to Unlock
10.5" Bruen Typhon ・Get the Bas-P to Level 23
10.5” FTac Arrow ・Get the Basilisk to Level 27
10.6” Lachstrike Barrel ・Get the RAPP H to Level 4
10" Bruen FCT-6 Info Coming Soon!
10” SA Phoenix ・Get the Chimera to Level 15
11.5” Carbine Shroud ・Get the M16 to Level 9
11.5” T-H4 Barrel ・Get the M4 to Level 4
11” Bryson Special ・Get the Lockwood 300 to Level 20
114mm Darkstar ・Get the Lachmann Shroud to Level 4
12.5" Rugged ZN ・Get the Tempus Torrent to Level 9
12.5” Carbon Barrel ・Get the SP-R 208 to Level 14
12" Bruen SZ-36 ・Get the Bas-P to Level 16
12" Tacshort Barrel ・Get the TAQ-56 to Level 3
13.5” Lonestar Barrel ・Get the Lockwood Mk2 to Level 6
13" Frenzy IX ・Get the Tempus Razorback to Level 17
14" Bruen Echelon ・Get the M13B to Level 17
14” Carbine Shroud ・Get the M16 to Level 3
14” Polarize Barrel ・Get the Expedite 12 to Level 9
14” Shorty Barrel ・Get the Expedite 12 to Level 18
15.5” Theta-X13 ・Get the TAQ-M to Level 8
15.9” Lachmann RAPP Barrel ・Get the Lachmann-762 to Level 3
16.5" MCW Cyclone Long Barrel ・Get the MCW to Level 2
16.5” Bruen S901 ・Get the MX9 to Level 7
16.5” Bruen S901 Barrel Info Coming Soon!
16.5” STB Factory Info Coming Soon!
16" Tankr-V ・Get the Tempus Razorback to Level 3
16" Tour RP ・Get the Tempus Torrent to Level 3
16" XLB-S ・Get the ISO 45 to Level 18
16” Bryson Factory Barrel ・Get the Bryson 890 to Level 14
16” Bryson Shockwave ・Get the Bryson 890 to Level 18
16” Chrome-Lined RFX40 Barrel ・Get the EBR-14 to Level 8
16” Cloak 90 ・Get the PDSW 528 to Level 24
16” ZLR Executor 80 Barrel ・Get the SP-R 208 to Level 10
17.5” Orca Barrel ・Get the MCPR-300 to Level 4
17.5” Tundra Pro Barrel ・Get the TAQ-56 to Level 12
17" IO-XL Info Coming Soon!
17” Corvus Prorange ・Get the PDSW 528 to Level 15
170mm Grapple VI ・Get the Lachmann Shroud to Level 10
18.5” Battlemaster ・Get the Expedite 12 to Level 27
18.5” Bryson LR Factory Info Coming Soon!
18.5” Emperor Barrel ・Get the Expedite 12 to Level 4
18.5” XRK Resonate ・Get the SA-B 50 to Level 14
18.75” Cloak 90 ・Get the PDSW 528 to Level 28
18" Lonestar Barrel Info Coming Soon!
18" Precision-6 Barrel ・Get the TAQ-V to Level 18
18" Tack-2L ・Get the Tempus Razorback to Level 14
18” Bruen Guerilla ・Get the STB 556 to Level 2
18” Demo Firewall ・Get the Bryson 800 to Level 2
18” T300 Barrel ・Get the SO-14 to Level 6
19” Silentfire Barrel ・Get the MCPR-300 to Level 24
20" Bruen S-620 ・Get the STB 556 to Level 14
20” Bruen Silver Series Barrel ・Get the SAKIN MG38 to Level 16
21.5” Bryson Shredder ・Get the Bryson 800 to Level 19
21.5” Bryson TacFire Info Coming Soon!
21.5” Fluted Fifty ・Get the Signal 50 to Level 18
21.5” Recourse Info Coming Soon!
21.5” Recourse Barrel ・Get the Bryson 890 to Level 3
21" Coyote Barrel ・Get the Lockwood Mk2 to Level 12
21” EXF Rhino Barrel ・Get the RAAL MG to Level 9
22.5" EXF Alamo ・Get the Lockwood Mk2 to Level 27
22.5” Elevate-11 ・Get the SP-R 208 to Level 4
22” Boremaster Barrel ・Get the EBR-14 to Level 14
22” Cavalry Barrel ・Get the SP-X 80 to Level 3
22” Factory Fourteen Barrel Info Coming Soon!
22” OMX-456 ・Get the MCPR-300 to Level 11
23.5” Fluted R-67 ・Get the LA-B 330 to Level 5
23.5” SA Fifty-H7 ・Get the Signal 50 to Level 6
23" EXF Foresight Barrel ・Get the Bruen Mk9 to Level 16
24" Outreach 4 ・Get the Tempus Torrent to Level 13
25" Buffalo Barrel ・Get the Lockwood Mk2 to Level 23
26.5” Demo Field Pro Barrel ・Get the RAAL MG to Level 20
26" CF-Bipod Barrel ・Get the Carrack .300 to Level 2
26" Mammoth HB50 ・Get the Victus XMR to Level 10
29.5” Rifled Barrel ・Get the Bryson 800 to Level 14
29” TV Kilo-50 ・Get the Signal 50 to Level 15
30" Flintfire Bipod ・Get the Carrack .300 to Level 8
30" Flintline ・Get the Carrack .300 to Level 5
300 Subsound ・Get the Carrack .300 to Level 15
300 Subsound Bipod ・Get the Carrack .300 to Level 18
342mm SAKIN KL ・Get the Kastov 545 to Level 14
355mm HGS-55 Info Coming Soon!
395mm FR Minibore ・Get the FR Avancer to Level 16
・Get the FR 5.56 to Level 17
4" Frame S-1 ・Get the ISO 45 to Level 15
4” Thunderfire ・Get the Bas-P to Level 9
419mm EXF Barrel ・Get the FTAC Recon to Level 6
419mm Schlager Salvo ・Get the Expedite 12 to Level 24
435mm FR435 ・Get the FR Avancer to Level 12
・Get the FR 5.56 to Level 2
5.5" EXF OP-40 ・Get the Chimera to Level 7
5.5” Fennec Minitac ・Get the Fennec 45 to Level 8
508mm Rear Guard ・Get the STB 556 to Level 11
597mm Matuzek Inferno ・Get the Lockwood 300 to Level 11
6.5" Bruen Drake ・Get the Bas-P to Level 13
6.5” EXF Vorpal ・Get the Chimera to Level 12
6.75" Corvus Cougar 500 ・Get the Basilisk to Level 17
6" Axeblade ・Get the ISO 9mm to Level 11
600mm FR Longbore ・Get the FR Avancer to Level 3
・Get the FR 5.56 to Level 14
7.5” Tempus Firebrand ・Get the FTAC Recon to Level 18
7" Bruen B-M20 ・Get the M13B to Level 4
7" Bruen C-M20 Info Coming Soon!
7" Ex Raptor-V2 ・Get the ISO 45 to Level 6
711mm Matuzek D50 ・Get the Lockwood 300 to Level 5
76L-P Heavy Barrel ・Get the MCW 6.8 to Level 6
・Get the Sidewinder to Level 20
8” XRK CQB Barrel ・Get the Bryson 800 to Level 9
9.5” Duke-30 ・Get the PDSW 528 to Level 2
9" PTX Trainer ・Get the ISO 45 to Level 10
9” TAC-CB 55 ・Get the SA-B 50 to Level 2
Aiguo Defender Short Barrel ・Get the DG-56 to Level 17
AMR9 Commando Pro Barrel ・Get the AMR9 to Level 26
AMR9 Enforcer Long Barrel ・Get the AMR9 to Level 6
BAK-9 279mm Barrel ・Get the Minibak to Level 5
Banner-80 Light Barrel ・Get the Holger 556 to Level 15
Boreal-6C Suppressed Barrel Info Coming Soon!
BR209 Barrel ・Get the Kastov-74u to Level 11
Bruen 18" Para ・Get the Bruen Mk9 to Level 19
Bruen Bridle 60 ・Get the TR-76 Geist to Level 5
Bruen Bridle Heavy ・Get the TR-76 Geist to Level 18
Bruen Turaco 686mm ・Get the HCR 56 to Level 17
Bruen Venom Long Barrel ・Get the Bas-B to Level 2
Bryson Aggresor 712 Short Barrel ・Get the Lockwood 680 to Level 20
Bryson Hammerforged Long Barrel ・Get the Lockwood 680 to Level 3
Bryson Snubby ・Get the Basilisk to Level 7
Bull Rider 16.5” ・Get the FTAC Recon to Level 22
CDG T-25 Light Barrel ・Get the DG-56 to Level 11
Ceros 22" ・Get the FJX Imperium to Level 17
Ceros 29" ・Get the FJX Imperium to Level 11
Chrios-6 Match ・Get the Holger 26 to Level 16
・Get the Holger 556 to Level 20
・Get the DM56 to Level 13
Chroma LRS ・Get the Tempus Torrent to Level 16
Cipher-121 ・Get the ISO Hemlock to Level 24
CMRN-50 ・Get the FTAC Siege to Level 18
Conquer-70 Long Barrel Info Coming Soon!
Crippling Malice Light Barrel ・Get the Bas-B to Level 20
Cronen Headwind Long Barrel Info Coming Soon!
Cross-X Short Barrel ・Get the Holger 556 to Level 2
Culpa OGS Light Barrel ・Get the DG-56 to Level 22
・Get the DG-58 LSW to Level 2
Deadsight 90 ・Get the KV Broadside to Level 14
Demo 501 Factory Info Coming Soon!
DG Emperor-V Heavy Barrel ・Get the DG-58 LSW to Level 6
DG-56 LS18 Barrel Info Coming Soon!
DG-58 LS18 Heavy Barrel ・Get the DG-56 to Level 2
・Get the DG-58 LSW to Level 18
DG-58 Micro Barrel Info Coming Soon!
Executor 546 ・Get the Victus XMR to Level 15
EXF Gulf-16 Barrel ・Get the RAAL MG to Level 17
EXF Opal-9 ・Get the 9mm Daemon to Level 4
EXF Trope-H ・Get the 9mm Daemon to Level 9
Exiler-84 Short Barrel Info Coming Soon!
Fahrenheit 29" ・Get the FJX Imperium to Level 5
Fennec Covert Force ・Get the Fennec 45 to Level 20
Fielder-T50 ・Get the ISO Hemlock to Level 13
Fission 60 Barrel Info Coming Soon!
Forge Tac Ninja ・Get the Fennec 45 to Level 23
Freight-40 Barrel ・Get the TR-76 Geist to Level 22
FSS Cannonade 16” ・Get the FSS Hurricane to Level 7
FSS Fullstop Barrel Info Coming Soon!
FSS Imperator Light Barrel Info Coming Soon!
FSS Jetstream ・Get the Signal 50 to Level 11
FSS-X7 Barrel ・Get the FSS Hurricane to Level 10
FT Competition ・Get the 9mm Daemon to Level 13
FT Ferocity LR Barrel ・Get the Bruen Mk9 to Level 4
FTac 8.5” Recon ・Get the Fennec 45 to Level 17
FTAC Carnivora 7" ・Get the Basilisk to Level 23
FTac Coldforge 16” Barrel ・Get the 556 Icarus to Level 4
FTAC Defense 14.5” ・Get the PDSW 528 to Level 20
FTac Fang Ported ・Get the Basilisk to Level 12
FTac FB20 Info Coming Soon!
FTac Hornet 20” Barrel ・Get the HCR 56 to Level 2
FTac M-Sub 12” ・Get the Lachmann Sub to Level 3
FTac SB ・Get the 556 Icarus to Level 12
FTAC Series IX 14.5” ・Get the PDSW 528 to Level 9
Gunner D20 ・Get the KV Broadside to Level 16
Handler LKP Short Barrel Info Coming Soon!
Heavy-Tac 80 ・Get the Carrack .300 to Level 13
Hel's Reach Short Barrel ・Get the TYR to Level 16
HGL-92 ・Get the Holger 26 to Level 20
・Get the DM56 to Level 16
Hightower 20” Barrel ・Get the M4 to Level 15
Hiss Short Light Barrel ・Get the WSP-9 to Level 6
Holger Factory Barrel ・Get the Holger 26 to Level 13
HR6.8 Barrel ・Get the Cronen Squall to Level 2
Huntlock Light Barrel ・Get the TYR to Level 24
Huntsman Series-R Integrated Suppressor Barrel ・Get the MCW 6.8 to Level 24
・Get the Sidewinder to Level 22
HYP-LM ・Get the MX Guardian to Level 17
IG-K30 406mm ・Get the Kastov 545 to Level 5
Impact Point ・Get the X13 Auto to Level 12
Imperator Long Barrel ・Get the Haymaker to Level 19
Invoker Light Barrel ・Get the Pulemyot 762 to Level 15
ISO 45 Factory Info Coming Soon!
JAB-30 Short Barrel ・Get the Haymaker to Level 2
JCX-L Suppressed Barrel ・Get the Riveter to Level 24
KAS-1 254mm ・Get the Vaznev-9K to Level 13
KAS-10 584mm Barrel ・Get the RPK to Level 16
KAS-10 584mm Mod Barrel ・Get the KV Inhibitor to Level 16
・Get the KVD Enforcer to Level 2
KAS-7 406mm ・Get the Kastov 762 to Level 17
KAS-7 406mm Barrel Info Coming Soon!
KAS-7 Integrated Suppressor ・Get the KV Inhibitor to Level 18
・Get the KVD Enforcer to Level 17
KAS-Dworf Heavy Long Barrel ・Get the KV Inhibitor to Level 23
・Get the KVD Enforcer to Level 14
Kastovia 343 ・Get the Kastov 762 to Level 3
Kastovia 406 Info Coming Soon!
Kastovia JEK-40 Barrel ・Get the KV Inhibitor to Level 3
・Get the KVD Enforcer to Level 29
Kastovia LPM-12 ・Get the KV Inhibitor to Level 21
・Get the KVD Enforcer to Level 9
Kilo Short Barrel ・Get the Riveter to Level 16
Kimura Blackiron Heavy Short Barrel ・Get the MCW to Level 15
Kimura Silentshot Integral Suppressor ・Get the MCW to Level 26
KLX-09 Short Barrel Info Coming Soon!
KR Midnight 13" Barrel ・Get the MCW to Level 24
KSTV-17 ・Get the Kastov-74u to Level 9
KYZYL Dawn Barrel ・Get the SAKIN MG38 to Level 9
L38 Falcon 226mm ・Get the Lachmann Sub to Level 7
Lach-12 Barrel ・Get the Lachmann-556 to Level 17
Lach-152 Zulu ・Get the VEL 46 to Level 9
Lach-DX 203mm ・Get the VEL 46 to Level 15
Lachmann Dart 165mm ・Get the VEL 46 to Level 4
Lachmann Nova ・Get the LM-S to Level 12
Lachmann Pulsar ・Get the Lachmann Sub to Level 17
Lance-50 12” Barrel ・Get the TAQ-V to Level 11
Light 9" Bruen Wyvern Short Barrel ・Get the Bas-B to Level 27
Limitless V2 Heavy Barrel ・Get the TYR to Level 19
LM Aurora 90 Barrel ・Get the Lachmann-556 to Level 5
LM Inflix Short Heavy Barrel ・Get the Holger 556 to Level 22
LM Series-7 ・Get the VEL 46 to Level 11
Loc.2 Short Barrel ・Get the TR-76 Geist to Level 12
Loc.5 Long Barrel ・Get the TR-76 Geist to Level 16
Lockwood Defender Heavy Long Barrel ・Get the Lockwood 680 to Level 23
Lockwood Frontiersman ・Get the Lockwood Mk2 to Level 17
Lockwood Stalker Heavy Short Barrel ・Get the Lockwood 680 to Level 12
LR-30/56 ・Get the ISO Hemlock to Level 19
LR-Retort 29" ・Get the FJX Imperium to Level 2
LR1:7 20.5” Barrel ・Get the TAQ-M to Level 16
LR6.8 22" ・Get the Cronen Squall to Level 20
LTC-B ・Get the KV Broadside to Level 3
M13C Factory Barrel Info Coming Soon!
Mack 8 21.5 Short ・Get the Victus XMR to Level 20
Mack 8 33.5 Super ・Get the Victus XMR to Level 3
Matuzek 812 Barrel ・Get the Lockwood 300 to Level 14
Matuzek Cottonmouth Barrel ・Get the P890 to Level 13
Matuzek Venom ・Get the P890 to Level 2
MCW Crown-30 Barrel ・Get the MCW 6.8 to Level 17
Meer-56 11" Factory Barrel ・Get the Lachmann-762 to Level 7
Meer-76 449mm Factory Info Coming Soon!
MK2 Renetti Long Barrel ・Get the Renetti to Level 12
MLX Extended Heavy Barrel ・Get the Renetti to Level 19
MLX Short Competition Barrel ・Get the Renetti to Level 5
Mouse 40 ・Get the FTAC Siege to Level 23
MTZ Blackthorn Barrel ・Get the MTZ Interceptor to Level 14
MTZ Clinch Pro Barrel ・Get the MTZ-556 to Level 4
・Get the MTZ-762 to Level 9
MTZ Drifter Heavy Long Barrel ・Get the MTZ-556 to Level 18
MTZ Longshot Pro Barrel ・Get the MTZ Interceptor to Level 4
MTZ Natter Heavy Short Barrel ・Get the MTZ-556 to Level 22
MTZ Para Long Barrel ・Get the MTZ-556 to Level 19
MTZ Rowan XL-356 ・Get the MTZ-556 to Level 14
・Get the MTZ-762 to Level 3
MTZ VLDL-3568 Barrel ・Get the MTZ-556 to Level 10
MTZ-Precision Blackthorn Barrel ・Get the MTZ-762 to Level 18
MX-G Mobile ・Get the MX Guardian to Level 3
MX-G Short ・Get the MX Guardian to Level 11
Nimbus-6 Integrated Suppressor ・Get the AMR9 to Level 28
Noxious Short Compensated Barrel ・Get the WSP Stinger to Level 5
・Get the WSP Swarm to Level 20
・Get the WSP-9 to Level 27
NST-81 ・Get the FTAC Siege to Level 25
NT Quietus Suppressed Barrel ・Get the SVA 545 to Level 14
Nullifier-7 Light Barrel Info Coming Soon!
Orchestra-40 Short Heavy Barrel ・Get the MCW to Level 22
・Get the MCW 6.8 to Level 4
・Get the Sidewinder to Level 2
Perdition 24" Short Barrel ・Get the KATT-AMR to Level 13
Pestilence-12 Short Compensated Barrel ・Get the WSP Stinger to Level 12
・Get the WSP Swarm to Level 18
・Get the WSP-9 to Level 23
Prime Lord Heavy Barrel ・Get the Holger 26 to Level 2
・Get the DM56 to Level 20
Pro-99 Long Barrel ・Get the Longbow to Level 7
Range Twelve ・Get the KV Broadside to Level 8
Ratchet BE ・Get the FTAC Siege to Level 11
Ratchet BE Tac ・Get the FTAC Siege to Level 15
Rattleback Deadeye 16" Barrel ・Get the Sidewinder to Level 16
Rattleback Pro 14.5" Maw Barrel ・Get the MCW 6.8 to Level 19
・Get the Sidewinder to Level 14
RCQ-7 ・Get the ISO Hemlock to Level 3
Reckoning-8 Heavy Barrel ・Get the Pulemyot 762 to Level 2
Rival IGS-800 Barrel ・Get the Rival-9 to Level 19
Rival-38E Fire Starter Barrel ・Get the Rival-9 to Level 16
Rival-C Clearshot Barrel ・Get the Rival-9 to Level 4
RN5-XV 9mm ・Get the FTAC Siege to Level 20
Romeo FT 16” Barrel ・Get the RAPP H to Level 16
ROR4 Seer ・Get the DM56 to Level 5
SA Brake Barrel ・Get the .50 GS to Level 8
SA Comp Barrel ・Get the .50 GS to Level 13
SA Draven-20 Long Barrel ・Get the Riveter to Level 3
SA Lightweight CQC Barrel ・Get the SVA 545 to Level 22
SA Longfire ・Get the 9mm Daemon to Level 18
SA Longshot-50 ・Get the .50 GS to Level 3
SA Response III ・Get the Vaznev-9K to Level 7
SA Tyrant Fifty ・Get the .50 GS to Level 23
SA Ultra III ・Get the Kastov-74u to Level 4
SB6.8 16" ・Get the Cronen Squall to Level 15
Schlager L203 Barrel ・Get the VEL 46 to Level 20
Schlager RV-B ・Get the VEL 46 to Level 27
Second Line Mammoth Heavy Barrel ・Get the MCW to Level 18
Series 4-MR ・Get the ISO Hemlock to Level 8
Short 8" Bruen SZ-45 Barrel ・Get the Bas-B to Level 9
ShortTac 190mm ・Get the Kastov-74u to Level 16
SL Crater Heavy Barrel ・Get the MCW to Level 5
・Get the Sidewinder to Level 25
SO Klondike-45 Long Barrel Info Coming Soon!
ST Pyro Heavy Barrel ・Get the Pulemyot 762 to Level 7
Striker Elite Long Barrel ・Get the Striker to Level 2
・Get the Striker 9 to Level 18
Striker Recon Long Barrel ・Get the Striker to Level 9
・Get the Striker 9 to Level 23
Striker Stubby Barrel ・Get the Striker to Level 16
・Get the Striker 9 to Level 5
STV Precision Barrel ・Get the SVA 545 to Level 4
SuperTac-VI ・Get the FTAC Siege to Level 2
Supremacy-14 Short Barrel ・Get the Pulemyot 762 to Level 27
SVA-5 Short Barrel ・Get the SVA 545 to Level 25
TAC 597 Barrel ・Get the RPK to Level 3
Tac-Brute Suppresed Barrel ・Get the Longbow to Level 19
Tac-Command 19" ・Get the FJX Imperium to Level 25
Tango 228 Barrel ・Get the VEL 46 to Level 22
Tectonic Herald Light Barrel Info Coming Soon!
Tectonic Micro Integral Suppressor ・Get the AMR9 to Level 16
Tempus Aura Heavy Long Barrel ・Get the KATT-AMR to Level 7
Tempus Predator Precision Barrel ・Get the MCW 6.8 to Level 12
・Get the Sidewinder to Level 8
Tempus Trench Pro ・Get the M4 to Level 10
Tru-Tac Short Barrel ・Get the Longbow to Level 4
Velocious 40 ・Get the KV Broadside to Level 5
Warpig Short Barrel ・Get the SVA 545 to Level 13
Warrior Wolf ・Get the KV Broadside to Level 10
WSP Infiltrator Integrated Suppressor ・Get the WSP Swarm to Level 22
WSP Optac Long Barrel ・Get the WSP Swarm to Level 6
・Get the WSP-9 to Level 9
WSP Reckless-90 Long Barrel ・Get the WSP Swarm to Level 15
・Get the WSP-9 to Level 19
WSP Ruthless-L Barrel ・Get the WSP Swarm to Level 9
WSP Zip Barrel ・Get the WSP Swarm to Level 2
・Get the WSP-9 to Level 12
Wudi Long Barrel ・Get the DG-58 LSW to Level 13
Wyvern's Respite Long Barrel ・Get the Bas-B to Level 14
XRK Coremark 40 Heavy Barrel Info Coming Soon!
XRK Horizon V2 ・Get the Bruen Mk9 to Level 11
XRK Luc-9 ・Get the X13 Auto to Level 7
XRK Pyre-9 Heavy Long Barrel ・Get the COR-45 to Level 16
XRK Sidewinder-6 Slide ・Get the X12 to Level 2
XRK Stalker Factory Barrel Info Coming Soon!
XRK Stoic-4 Suppressed Barrel Info Coming Soon!
XRK Swiftshot Light Barrel ・Get the COR-45 to Level 6
XRK Tacops Barrel ・Get the P890 to Level 8
XTEN FRL-3 Heavy Barrel Info Coming Soon!
XTen Harbinger ・Get the P890 to Level 25
XTen Windfall ・Get the 9mm Daemon to Level 15
Zang-34 Barrel ・Get the KATT-AMR to Level 17
ZIU-16 Heavy Long Barrel ・Get the TYR to Level 7
ZLR 16.5” Ignition Barrel ・Get the Fennec 45 to Level 14
ZLR Sport XT ・Get the KV Broadside to Level 18
ZLR Sport-8 ・Get the KV Broadside to Level 20

How to Equip Barrels

Unlock the Barrel Slot for Your Gun

Before you can equip a barrel attachment for your gun in MW3, you will first need to unlock its Barrel Slot. To unlock this attachment slot, you will need to earn Weapon XP for your chosen gun by using it in MW3 multiplayer matches, Zombies, or Warzone.

Equip a Barrel via the Gunsmith

Once you have both the Barrel Slot and a compatible gun barrel unlocked for your gun, you can customize your weapon and add the barrel via the Gunsmith.

What are Barrels?

Modifies the Effective Range of Your Gun

Barrels primarily modify the effective range of your gun, in-game. Longer barrels offer more bullet velocity and damage at the cost of poor handling at close-quarters, while shorter barrels offer better handling at the cost of effective range.

Modern Warfare 3 (MW3) Related Guides

Modern Warfare 3 - Attachments

List of All Attachments

Attachment Types in MW3

Attachments By Type
Barrel Stock Ammunition Muzzle
Rear Grip Optic Underbarrel Magazine
Receiver Laser Comb Trigger Action
Guard Bolt Arm Rail
Carry Handle Lever Loader Wire
Conversion Kit

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Call of Duty Modern Warfare 3 (MW3) Walkthrough Team
This article was created by Game8's elite team of writers and gamers.

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