The .300 RTC Double Stack 40 Round is an attachment for the M13 In Call Of Duty: Mobile.
Barrel: Various (YKM Integral Suppressor Light · YKM Integral Suppressor · MIP Light Barrel (Short) · MIP Light · MIP Extended Light Barrel · MIP Steady · OWC Ranger · OWC Marksman · RTC Extended Light Barrel · Rapid Fire Barrel · Built-In Silence Barrel · Long-Range Barrel · Sawed-Off Barrel · Extended Barrel · Light Barrel (Long) · Light Barrel (Short))AK-47 only (GRU Combo Grip) · HVK-30 (YKM Integral Suppressor Heavy) · Peacekeeper MK2 (Well-Forged Barrel · Taskforce Barrel) · AS VAL (MIP Quick Response Barrel · MIP 105mm Melee Barrel · MIP 200mm Mid-Range Barrel) · CR-56 AMAX (Gunner Stock · Intruder Stock · MIP Custom Long) · M13 (RTC Silencer Barrel · RTC Mini Barrel · RTC Heavy Long Barrel) · DL Q33 (.408 Standard · Free Floating) · M21 EBR (MIP Precise) · Arctic .50 (Assassin Short · 0.5 Light Long · Anti-Material Heavy · OWC Monolithic Suppressor) · XPR-50 (RTC Lightweight · RTC CQB · RTC Long) · Locus (YKM Lightweight Short · YKM Lightweight Long · YKM Standard) · Outlaw (MIP Tac Long · MIP Memorial Cowboy) · NA-45 · (MIP Custom Light · RTC Modified · OWC Tac Long) · SVD (RTC 660mm Heavy · RTC 510mm Light) · RPD (OWC Heavy Barrel · OWC Compact Barrel · OWC Extended Barrel · Cooling Compressor Barrel) · M4LMG (MIP Ultralight Barrel · MIP Short Barrel) · UL736 (RTC 12.4" Light Barrel · RTC 18.2" Short · RTC 25.4" Extended Barrel) · S36 (Compagnie Generale Sevier - Light Barrel · Compagnie Generale Sevier - Short Barrel) · Chopper (Chopper Infantry · Chopper Special Forces · Chopper Heavy) · QQ9 (RTC Recon Tac Long · MIP Customized Light Barrel · MIP Tactical Barrel · Monolithic Integral Suppressor) · Striker (OWC Customized Heavy Barrel) · HS2126 (YKM Light Barrel (Long) · YKM Light Barrel (Short) · YKM Heavy Barrel) · MK2 (20.0 Forged Barrel · 18.0 Sport Barrel) · MW11 (.45 Tac Long · .45 Suppressor Light · .45 Compact) · J358 (J358 Custom Light · J358 Long · J358 Short)
Bowstring: 16 Bowstring · 28 Bowstring
Limb: Customized Limb · Enhanced Limb · Heavy Limb
Optic: Classic Red Dot Sight · Red Dot Sight 1 · Red Dot Sight 2 · Red Dot Sight 3 · Red Dot Sight 4 · Red Dot Sight 5 · Red Dot Sight 6 · Classic Holographic Sight · Holographic Sight 1 · Holographic Sight 2 · Holographic Sight 3 · Tactical Scope · 3X Tactical Scope 1 · 3X Tactical Scope 2 · 3X Tactical Scope 3 · 4X Tactical Scope · OWC 4.4X Tactical Scope · RTC 4.4X Tactical Scope · 6X Tactical Scope 2 · 6X Tactical Scope 3 · Thermal Scope (BR only)
Stock: Various (YKM Light Stock · YKM Combat Stock · MIP Strike Stock · MIP Stalker Stock · RTC Steady Stock · OWC Skeleton Stock · OWC Ranger Stock · Light Weight Stock · Marathon Stock · Agile Stock · No Stock)HBRa3 only (Thunderbolt Sling) · CR-56 AMAX (Psilos Light Stock · MIP Gatekeeper · Custom Strike · MIP Tracker Stock) · M13 (M13 Skeleton Stock · RTC Combat Stock · RTC Assault Tactical) · XPR-50 (YKM Ghost Stock) · MK2 (MIP Sport Stock · Custom Accuracy Stock · Cartridge Sleeve · Ultralight Hollow) · Renetti (Folding Stock · Control · Combo) · Crossbow (Watcher Stock · Ranger Stock · Archer Stock)
Rear Grip: Stippled Grip Tape · Granulated Grip Tape · Rubberized Grip Tape · Rustle Grip Tape · Sturdy Grip Tape · Firm Grip Tape · Non-slip Foregrip · Handmade Grip Tape · Shoulder Stock - Tactical · Shoulder Stock - Wood
Bolt: Light Bolt · Heavy Bolt · Sticky Grenade Bolt · Thermite Bolt · Gas Grenade Bolt
Ammunition: Extended Mag · Large Extended Mag · 8 Round Reload · 9 Round Reload · 10 Round Reload · 12 Round Reload · 13 Round Reload · 15 Round Extended Mag · 16 Round Extended Reload Case · 18 Round Reload · 20 Round Reload · 28 Round Extended Reload Case · 30 Round Reload · 33 Round Extended Mag · 35 Round Extended Mag · 36 Round Extended Mag · 38 Round Extended Mag · 39 Round Extended Mag · 40 Round Reload · 44 Round Extended Mag · 45 Round Extended Mag · 46 Round Extended Mag · 48 Round Extended Mag · 50 Round Extended Mag · 60 Round Extended Mag · 75 Round Belt · 80 Round Extended Mag · 100 Round Belt · 120 Round Reload · 150 Round Belt · 200 Round Belt · Light Mag · Fast Reload · Fast Extended Mag · Double Stack Mag · 30 Round Fast Reload · 32 Round Fast Reload · 36 Round Fast Reload · 38 Round Fast Reload · 40 Round Fast Reload · 42 Round Fast Reload · 45 Round Fast Reload · 50 Round Fast Reload · 84 Round Hybrid Mag · Hybrid Mag for MX9 · Stopping Power Reload · MIP Stopping Power Reload · OWC Stopping Power Reload · Large Caliber Ammo · Halberd Mag · .300 RTC 30 Round Reload · .300 RTC Double Stack 40 Round · .300 5 Round Reload · .338 5 Round Reload · 15 Round FMJ · 25 Round OTM Mag · 30 Round OTM Mag · 10mm 30 Round Reload · 5.45 Caliber Ammo · 30 Round 5.56mm Mag · 60 Round 5.56mm Reload · 7.62 40 Round Reload · M67 Ammo · .30 - 30 Ammo · Thermite Reload · FF Birdshot · Tube Extension · Slug Reload · Fragment Ammo · High Explosive Ammo · Electromagnetic Ammo · Holger-26C Lightweight Polymer Mag · Holger-26K Double-Stack Carbine Mag · 25x59mm Explosive Mag · 25x59mm Thermite Mag
Trigger Action: Match Grade Trigger · Heavy Duty Trigger · Lightweight Trigger
Smoothbore: MFT Heavy Smoothbore · MFT Ultra Light Smoothbore · MFT Urban Combat
Guard: OWC Stable · OWC Commander · OWC Slim
Underbarrel: Foregrip · Strike Foregrip · Merc Foregrip · Operator Foregrip · Ranger Foregrip · Tactical Foregrip A · Tactical Foregrip B · Elite Foregrip · OWC Foregrip · Infiltrator Foregrip · Patrol Foregrip · Field Agent Foregrip · RTC Speed Foregrip · Piranha Foregrip · Quickdraw · Bipod · Heavy Handle · Crossbar · Stippled Fore Grip Tape · Granulated Fore Grip Tape · Rubberized Fore Grip Tape · Tactical Guard · Steady Guard