123 Products
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![[APS] M4 CQBR Outer Barrel Extension Set[-14mm CCW][35mm/55mm/110mm]](//www.sixmm.com/cdn/shop/products/APS_3pcs35mm55mm110mmExtendOuterBarrelSet14mmCCW_2.jpg?v=1619777847&width=950)
![[APS] M4 CQBR Outer Barrel Extension Set[-14mm CCW][35mm/55mm/110mm]](//www.sixmm.com/cdn/shop/products/APS_3pcs35mm55mm110mmExtendOuterBarrelSet14mmCCW_1.jpg?v=1619777850&width=950)
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![[Army Force] ALuminium Outer Barrel Extension[3inch][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_3inch_-14mmCCW_2.jpg?v=1665646097&width=950)
![[Army Force] ALuminium Outer Barrel Extension[3inch][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_3inch_-14mmCCW_1.jpg?v=1665646097&width=950)
GG AA#15677-9C2A[GG] ALuminium Outer Barrel Extension[3inch][-14mm CCW]
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![[5KU] Aluminium 7 inch M4 PDW AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](//www.sixmm.com/cdn/shop/products/5KU_Aluminium7inchM4PDWAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635494338&width=950)
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![[CYMA] 4.5inch Aluminum Outer Barrel [For M4 / M16 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_4.5inchAluminumOuterBarrel_ForM4M16AEGSeries_1.jpg?v=1623763488&width=950)
![[CYMA] 4.5inch Aluminum Outer Barrel [For M4 / M16 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_4.5inchAluminumOuterBarrel_ForM4M16AEGSeries_2.jpg?v=1623763490&width=950)
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![[CYMA] M4 CQB Aluminum Outer Barrel Extension [5.56 NATO Marking][BLK]](//www.sixmm.com/cdn/shop/products/CYMA_M4CQBAluminumOuterBarrelExtension_5.56NATOMarking_BLK_45.jpg?v=1622480506&width=950)
![[CYMA] M4 CQB Aluminum Outer Barrel Extension [5.56 NATO Marking][BLK]](//www.sixmm.com/cdn/shop/products/CYMA_M4CQBAluminumOuterBarrelExtension_5.56NATOMarking_BLK.jpg?v=1622480504&width=950)
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![[E&C] 10.5" CQB/R Aluminum One-Piece Outer Barrel [For Tokyo Marui M4 AEG Series]](//www.sixmm.com/cdn/shop/products/4685__EC_11_CQBR_Aluminum_One-Piece_Outer_Barrel_for_M4_AEG_1_1_580x_044c10ad-6348-4e58-b7d0-914a317ade9f.jpg?v=1656822020&width=950)
![[E&C] 10.5" CQB/R Aluminum One-Piece Outer Barrel [For Tokyo Marui M4 AEG Series]](//www.sixmm.com/cdn/shop/products/4685__EC_11_CQBR_Aluminum_One-Piece_Outer_Barrel_for_M4_AEG_4_1_1024x1024_2x_23200b73-889d-402b-b0e5-b49abcdfbb1e.jpg?v=1656822020&width=950)
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![[Airsoft Artisan] MCX Barrel Clamp](//www.sixmm.com/cdn/shop/files/1_dbb4ac6f-79d6-4a9e-9f98-1dd29032d2c8.jpg?v=1719200609&width=950)
![[Airsoft Artisan] MCX Barrel Clamp](//www.sixmm.com/cdn/shop/files/2_e5c58642-bf5c-4d1e-a73b-2c585641e066.jpg?v=1719200615&width=950)
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![[5KU] Aluminium 10 inch M4 CQB AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](//www.sixmm.com/cdn/shop/products/5KU_Aluminium10inchM4CQBAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635495011&width=950)
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![[Army Force] 2inch Stubby Outer Barrel Base[For Tokyo Marui/Krytac AEG Series][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelBase_ForTokyoMaruiKrytacAEGSeries_-14mmCCW_1.jpg?v=1622022772&width=950)
![[Army Force] 2inch Stubby Outer Barrel Base[For Tokyo Marui/Krytac AEG Series][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelBase_ForTokyoMaruiKrytacAEGSeries_-14mmCCW_3.jpg?v=1622022772&width=950)
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![[Army Force] Aluminium Outer Barrel Set [For Tokyo Marui / WA / G&P M4 AEG GBB Series][BLK]](//www.sixmm.com/cdn/shop/products/ArmyForce_AluminiumOuterBarrelSet_ForTokyoMaruiWAG_PM4AEGGBBSeries_BLK_3.jpg?v=1635418813&width=950)
![[Army Force] Aluminium Outer Barrel Set [For Tokyo Marui / WA / G&P M4 AEG GBB Series][BLK]](//www.sixmm.com/cdn/shop/products/ArmyForce_AluminiumOuterBarrelSet_ForTokyoMaruiWAG_PM4AEGGBBSeries_BLK_2.jpg?v=1635418812&width=950)
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![[APS] 35mm Extend Outer Barrel[-14mm CCW]](//www.sixmm.com/cdn/shop/products/APS_35mmExtendOuterBarrel_-14mmCCW.jpg?v=1677744557&width=950)
APS AA#16323-[APS] 35mm Extend Outer Barrel[-14mm CCW]
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![[APS] 55mm Extend Outer Barrel 14mm CCW](//www.sixmm.com/cdn/shop/products/APS-OB-AA042B-AG-1a.jpg?v=1667991122&width=950)
![[APS] 55mm Extend Outer Barrel 14mm CCW](//www.sixmm.com/cdn/shop/products/APS-OB-AA042B-AG-1.jpg?v=1667991122&width=950)
APS AA#04081-[APS] 55mm Extend Outer Barrel[-14mm CCW]
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![[5KU] Aluminium 11.5 inch M4 Carbine AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](//www.sixmm.com/cdn/shop/products/5KU_Aluminium11.5inchM4CarbineAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635495765&width=950)
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![[ARES] G36K outer Barrel Set[New Version]](//www.sixmm.com/cdn/shop/files/6073__ARES_OB-G36K__G36K_Out_Barrel_Set_New_Version__1_1.webp?v=1711145261&width=950)
![[ARES] G36K outer Barrel Set[New Version]](//www.sixmm.com/cdn/shop/files/6073__ARES_OB-G36K__G36K_Out_Barrel_Set_New_Version_1.webp?v=1711145261&width=950)
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![[Army Force] 14mm Barrel Thread Convertor [From +14MM CW to -14MM CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_14mmOuterBarrelSilencerAdaptor_14MMCWto-14MMCCW.jpg?v=1668499987&width=950)
![[Army Force] 14mm Barrel Thread Convertor [From +14MM CW to -14MM CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_14mmOuterBarrelSilencerAdaptor_14MMCWto-14MMCCW_1.jpg?v=1668499988&width=950)
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![[CYMA] Aluminium Gas Tube Assembly [For CYMA AK74 AKM CM040 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_AluminiumGasTubeAssembly_ForCYMAAK74AKMCM040AEGSeries_4.jpg?v=1638196736&width=950)
![[CYMA] Aluminium Gas Tube Assembly [For CYMA AK74 AKM CM040 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_AluminiumGasTubeAssembly_ForCYMAAK74AKMCM040AEGSeries_2.jpg?v=1638196736&width=950)
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![[5KU] 12.5" M4 AEG Outer Barrel Carbine Length[BLK]](//www.sixmm.com/cdn/shop/products/5KU_12.5M4AEGOuterBarrelCarbineLength_BLK_1.jpg?v=1621324164&width=950)
![[5KU] 12.5" M4 AEG Outer Barrel Carbine Length[BLK]](//www.sixmm.com/cdn/shop/products/5KU_12.5M4AEGOuterBarrelCarbineLength_BLK_2.jpg?v=1621324166&width=950)
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![[CYMA] Aluminium 10.5 Inch M4 CQBR AEG Outer Barrel[For Tokyo Marui M4 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_Aluminium10.5InchM4CQBRAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_2.jpg?v=1636477745&width=950)
![[CYMA] Aluminium 10.5 Inch M4 CQBR AEG Outer Barrel[For Tokyo Marui M4 AEG Series]](//www.sixmm.com/cdn/shop/products/CYMA_Aluminium10.5InchM4CQBRAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_3.jpg?v=1636477746&width=950)
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![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][14.5inch]](//www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_14.5inch.jpg?v=1638943287&width=950)
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![[Army Force] ALuminium Outer Barrel Extension[5inch][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_5inch_-14mmCCW.jpg?v=1665653058&width=950)
![[Army Force] ALuminium Outer Barrel Extension[5inch][-14mm CCW]](//www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_5inch_-14mmCCW_1.jpg?v=1665653058&width=950)
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![[5KU] 14.5" M4 AEG Light Weight Outer Barrel Carbine Length Black](//www.sixmm.com/cdn/shop/products/5KU_14.5M4AEGLightWeightOuterBarrelCarbineLengthBlack.jpg?v=1635496027&width=950)
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![[5KU] Airsoft AEG Aluminium Outer Barrel[For Tokyo Marui M4 AEG Series][10.3inch][BLK]](//www.sixmm.com/cdn/shop/products/5KU_AirsoftAEGAluminiumOuterBarrel_ForTokyoMaruiM4AEGSeries_10_2.jpg?v=1630933566&width=950)
![[5KU] Airsoft AEG Aluminium Outer Barrel[For Tokyo Marui M4 AEG Series][10.3inch][BLK]](//www.sixmm.com/cdn/shop/products/5KU_AirsoftAEGAluminiumOuterBarrel_ForTokyoMaruiM4AEGSeries_10_1.jpg?v=1630933568&width=950)
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![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][20inch]](//www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_20inch_2.jpg?v=1638943818&width=950)
![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][20inch]](//www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_20inch_3.jpg?v=1638943818&width=950)
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![[E&C] M4 Barrel Extension [-14mm CCW]](//www.sixmm.com/cdn/shop/products/E_C_M4BarrelExtension_-14mmCCW_1.jpg?v=1621943612&width=950)
![[E&C] M4 Barrel Extension [-14mm CCW]](//www.sixmm.com/cdn/shop/products/E_C_M4BarrelExtension_-14mmCCW_2.jpg?v=1621943613&width=950)
E&C AA#13649-OB43[E&C] M4 Barrel Extension [-14mm CCW]
![[APS] M4 CQBR Outer Barrel Extension Set[-14mm CCW][35mm/55mm/110mm]](http://www.sixmm.com/cdn/shop/products/APS_3pcs35mm55mm110mmExtendOuterBarrelSet14mmCCW_2.jpg?v=1619777847&width=950)
![[APS] M4 CQBR Outer Barrel Extension Set[-14mm CCW][35mm/55mm/110mm]](http://www.sixmm.com/cdn/shop/products/APS_3pcs35mm55mm110mmExtendOuterBarrelSet14mmCCW_1.jpg?v=1619777850&width=950)
![[Army Force] ALuminium Outer Barrel Extension[3inch][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_3inch_-14mmCCW_2.jpg?v=1665646097&width=950)
![[Army Force] ALuminium Outer Barrel Extension[3inch][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_3inch_-14mmCCW_1.jpg?v=1665646097&width=950)
![[5KU] Aluminium 7 inch M4 PDW AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](http://www.sixmm.com/cdn/shop/products/5KU_Aluminium7inchM4PDWAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635494338&width=950)
![[CYMA] 4.5inch Aluminum Outer Barrel [For M4 / M16 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_4.5inchAluminumOuterBarrel_ForM4M16AEGSeries_1.jpg?v=1623763488&width=950)
![[CYMA] 4.5inch Aluminum Outer Barrel [For M4 / M16 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_4.5inchAluminumOuterBarrel_ForM4M16AEGSeries_2.jpg?v=1623763490&width=950)
![[CYMA] M4 CQB Aluminum Outer Barrel Extension [5.56 NATO Marking][BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_M4CQBAluminumOuterBarrelExtension_5.56NATOMarking_BLK_45.jpg?v=1622480506&width=950)
![[CYMA] M4 CQB Aluminum Outer Barrel Extension [5.56 NATO Marking][BLK]](http://www.sixmm.com/cdn/shop/products/CYMA_M4CQBAluminumOuterBarrelExtension_5.56NATOMarking_BLK.jpg?v=1622480504&width=950)
![[E&C] 10.5" CQB/R Aluminum One-Piece Outer Barrel [For Tokyo Marui M4 AEG Series]](http://www.sixmm.com/cdn/shop/products/4685__EC_11_CQBR_Aluminum_One-Piece_Outer_Barrel_for_M4_AEG_1_1_580x_044c10ad-6348-4e58-b7d0-914a317ade9f.jpg?v=1656822020&width=950)
![[E&C] 10.5" CQB/R Aluminum One-Piece Outer Barrel [For Tokyo Marui M4 AEG Series]](http://www.sixmm.com/cdn/shop/products/4685__EC_11_CQBR_Aluminum_One-Piece_Outer_Barrel_for_M4_AEG_4_1_1024x1024_2x_23200b73-889d-402b-b0e5-b49abcdfbb1e.jpg?v=1656822020&width=950)
![[Airsoft Artisan] MCX Barrel Clamp](http://www.sixmm.com/cdn/shop/files/1_dbb4ac6f-79d6-4a9e-9f98-1dd29032d2c8.jpg?v=1719200609&width=950)
![[Airsoft Artisan] MCX Barrel Clamp](http://www.sixmm.com/cdn/shop/files/2_e5c58642-bf5c-4d1e-a73b-2c585641e066.jpg?v=1719200615&width=950)
![[5KU] Aluminium 10 inch M4 CQB AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](http://www.sixmm.com/cdn/shop/products/5KU_Aluminium10inchM4CQBAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635495011&width=950)
![[Army Force] 2inch Stubby Outer Barrel Base[For Tokyo Marui/Krytac AEG Series][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelBase_ForTokyoMaruiKrytacAEGSeries_-14mmCCW_1.jpg?v=1622022772&width=950)
![[Army Force] 2inch Stubby Outer Barrel Base[For Tokyo Marui/Krytac AEG Series][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_2inchStubbyOuterBarrelBase_ForTokyoMaruiKrytacAEGSeries_-14mmCCW_3.jpg?v=1622022772&width=950)
![[Army Force] Aluminium Outer Barrel Set [For Tokyo Marui / WA / G&P M4 AEG GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/ArmyForce_AluminiumOuterBarrelSet_ForTokyoMaruiWAG_PM4AEGGBBSeries_BLK_3.jpg?v=1635418813&width=950)
![[Army Force] Aluminium Outer Barrel Set [For Tokyo Marui / WA / G&P M4 AEG GBB Series][BLK]](http://www.sixmm.com/cdn/shop/products/ArmyForce_AluminiumOuterBarrelSet_ForTokyoMaruiWAG_PM4AEGGBBSeries_BLK_2.jpg?v=1635418812&width=950)
![[APS] 35mm Extend Outer Barrel[-14mm CCW]](http://www.sixmm.com/cdn/shop/products/APS_35mmExtendOuterBarrel_-14mmCCW.jpg?v=1677744557&width=950)
![[APS] 55mm Extend Outer Barrel 14mm CCW](http://www.sixmm.com/cdn/shop/products/APS-OB-AA042B-AG-1a.jpg?v=1667991122&width=950)
![[APS] 55mm Extend Outer Barrel 14mm CCW](http://www.sixmm.com/cdn/shop/products/APS-OB-AA042B-AG-1.jpg?v=1667991122&width=950)
![[5KU] Aluminium 11.5 inch M4 Carbine AEG Outer Barrel[For Tokyo Marui M4 AEG Series][BLK]](http://www.sixmm.com/cdn/shop/products/5KU_Aluminium11.5inchM4CarbineAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_BLK.jpg?v=1635495765&width=950)
![[ARES] G36K outer Barrel Set[New Version]](http://www.sixmm.com/cdn/shop/files/6073__ARES_OB-G36K__G36K_Out_Barrel_Set_New_Version__1_1.webp?v=1711145261&width=950)
![[ARES] G36K outer Barrel Set[New Version]](http://www.sixmm.com/cdn/shop/files/6073__ARES_OB-G36K__G36K_Out_Barrel_Set_New_Version_1.webp?v=1711145261&width=950)
![[Army Force] 14mm Barrel Thread Convertor [From +14MM CW to -14MM CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_14mmOuterBarrelSilencerAdaptor_14MMCWto-14MMCCW.jpg?v=1668499987&width=950)
![[Army Force] 14mm Barrel Thread Convertor [From +14MM CW to -14MM CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_14mmOuterBarrelSilencerAdaptor_14MMCWto-14MMCCW_1.jpg?v=1668499988&width=950)
![[CYMA] Aluminium Gas Tube Assembly [For CYMA AK74 AKM CM040 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_AluminiumGasTubeAssembly_ForCYMAAK74AKMCM040AEGSeries_4.jpg?v=1638196736&width=950)
![[CYMA] Aluminium Gas Tube Assembly [For CYMA AK74 AKM CM040 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_AluminiumGasTubeAssembly_ForCYMAAK74AKMCM040AEGSeries_2.jpg?v=1638196736&width=950)
![[5KU] 12.5" M4 AEG Outer Barrel Carbine Length[BLK]](http://www.sixmm.com/cdn/shop/products/5KU_12.5M4AEGOuterBarrelCarbineLength_BLK_1.jpg?v=1621324164&width=950)
![[5KU] 12.5" M4 AEG Outer Barrel Carbine Length[BLK]](http://www.sixmm.com/cdn/shop/products/5KU_12.5M4AEGOuterBarrelCarbineLength_BLK_2.jpg?v=1621324166&width=950)
![[CYMA] Aluminium 10.5 Inch M4 CQBR AEG Outer Barrel[For Tokyo Marui M4 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_Aluminium10.5InchM4CQBRAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_2.jpg?v=1636477745&width=950)
![[CYMA] Aluminium 10.5 Inch M4 CQBR AEG Outer Barrel[For Tokyo Marui M4 AEG Series]](http://www.sixmm.com/cdn/shop/products/CYMA_Aluminium10.5InchM4CQBRAEGOuterBarrel_ForTokyoMaruiM4AEGSeries_3.jpg?v=1636477746&width=950)
![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][14.5inch]](http://www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_14.5inch.jpg?v=1638943287&width=950)
![[Army Force] ALuminium Outer Barrel Extension[5inch][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_5inch_-14mmCCW.jpg?v=1665653058&width=950)
![[Army Force] ALuminium Outer Barrel Extension[5inch][-14mm CCW]](http://www.sixmm.com/cdn/shop/products/ArmyForce_ALuminiumOuterBarrelExtension_5inch_-14mmCCW_1.jpg?v=1665653058&width=950)
![[5KU] 14.5" M4 AEG Light Weight Outer Barrel Carbine Length Black](http://www.sixmm.com/cdn/shop/products/5KU_14.5M4AEGLightWeightOuterBarrelCarbineLengthBlack.jpg?v=1635496027&width=950)
![[5KU] Airsoft AEG Aluminium Outer Barrel[For Tokyo Marui M4 AEG Series][10.3inch][BLK]](http://www.sixmm.com/cdn/shop/products/5KU_AirsoftAEGAluminiumOuterBarrel_ForTokyoMaruiM4AEGSeries_10_2.jpg?v=1630933566&width=950)
![[5KU] Airsoft AEG Aluminium Outer Barrel[For Tokyo Marui M4 AEG Series][10.3inch][BLK]](http://www.sixmm.com/cdn/shop/products/5KU_AirsoftAEGAluminiumOuterBarrel_ForTokyoMaruiM4AEGSeries_10_1.jpg?v=1630933568&width=950)
![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][20inch]](http://www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_20inch_2.jpg?v=1638943818&width=950)
![[CYMA] Aluminum ONE-PIECE AEG Outer Barrel [Tokyo Marui M4 AEG Series][20inch]](http://www.sixmm.com/cdn/shop/products/CYMA_AluminumONE-PIECEAEGOuterBarrel_TokyoMaruiM4AEGSeries_20inch_3.jpg?v=1638943818&width=950)
![[E&C] M4 Barrel Extension [-14mm CCW]](http://www.sixmm.com/cdn/shop/products/E_C_M4BarrelExtension_-14mmCCW_1.jpg?v=1621943612&width=950)
![[E&C] M4 Barrel Extension [-14mm CCW]](http://www.sixmm.com/cdn/shop/products/E_C_M4BarrelExtension_-14mmCCW_2.jpg?v=1621943613&width=950)