The handguard itself is very nice and well-made, I have no comments about it, it is as it should be. The problem was the extra contents of the package, as one of the screws and the barrel extension shown in the photos were missing. For the price I'm quite disappointed with this
![[Z-Parts] Mk12 Mod1 Handguard & Steel Barrel for VIPER M4 GBB](http://www.sixmm.com/cdn/shop/products/viper-m4-008-01.jpg?v=1611818806&width=950)
![[Z-Parts] Mk12 Mod1 Handguard & Steel Barrel for VIPER M4 GBB](http://www.sixmm.com/cdn/shop/products/viper-m4-008-02.jpg?v=1611818806&width=950)
![[Z-Parts] 16 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-004-01.jpg?v=1611810049&width=950)
![[Z-Parts] 16 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-004-02.jpg?v=1611810049&width=950)
![[Z-Parts] 15 inch Handguard for VIPER Mk16 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/mk16-15__-black-nut-1-003_64b2cea2-404f-4409-b3ac-0e8ca6ab3d92.jpg?v=1611809603&width=950)
![[Z-Parts] 15 inch Handguard for VIPER Mk16 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/mk16-15__-black-nut-1-004_e765c6b2-9589-4318-9177-8f9622561656.jpg?v=1611809603&width=950)
![[Z-Parts] 14.5incah DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/3_206243c4-427b-46f7-8b75-3ee9ba28a019.jpg?v=1611809198&width=950)
![[Z-Parts] 14.5incah DD GOV Outer Barrel for VIPER M4 GBB (Blk)](http://www.sixmm.com/cdn/shop/products/4_027fc851-8491-4fec-9adb-6ffe6d7e4383.jpg?v=1611809198&width=950)
![[Z-Parts] 14.5 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-002-0a.jpg?v=1611808465&width=950)
![[Z-Parts] 14.5 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-002-01.jpg?v=1611808465&width=950)
![[5KU] Stainless Forward Assist[For Systema / Tokyo Marui M4 PTW/AEG Series]](http://www.sixmm.com/cdn/shop/products/5KU_StainlessForwardAssist_ForSystemaTokyoMaruiM4PTWAEGSeries_1.jpg?v=1637739171&width=950)
![[5KU] Stainless Forward Assist[For Systema / Tokyo Marui M4 PTW/AEG Series]](http://www.sixmm.com/cdn/shop/products/5KU_StainlessForwardAssist_ForSystemaTokyoMaruiM4PTWAEGSeries_2.jpg?v=1637739172&width=950)
![[RA-Tech] N.P.A.S. Complete Bolt Carrier for WA M4 GBB Series](http://www.sixmm.com/cdn/shop/files/RA-Tech_N.P.A.S.CompleteBoltCarrierforWAM4GBBSeries.jpg?v=1688627176&width=950)
![[Army Force] 6.01mm Inner Barrel for WA M4/M16 GBB [509mm]](http://www.sixmm.com/cdn/shop/products/3efb8334-a1b5-4e40-8dd8-6d23f8ca189b_0433a6de-093b-4b54-863c-b7ab92f2689d.jpg?v=1641362106&width=950)
![[Army Force] 6.01mm Inner Barrel for WA M4/M16 GBB[550mm]](http://www.sixmm.com/cdn/shop/products/3efb8334-a1b5-4e40-8dd8-6d23f8ca189b_8c5e8068-9925-41cd-a895-0ba9bf7ede23.jpg?v=1641362156&width=950)
![[Army Force] Steel Hammer Set[For WA M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/ArmyForce_SteelHammerSet_ForWAM4GBBSeries_BLK.webp?v=1715589616&width=950)
![[C&C Tac] Arron Smith SBT Style M4 Brace Stock[For Systema M4 PTW Series][BLK]](http://www.sixmm.com/cdn/shop/files/C_CTac_ArronSmithSBTStyleM4BraceStock_ForSystemaM4PTWSeries_BLK_ea92b19f-7e92-4e5a-9156-9edfa0fadde8.webp?v=1714737155&width=950)
![[C&C Tac] Arron Smith SBT Style M4 Brace Stock[For VFC / GHK / WA M4 GBB Series][BLK]](http://www.sixmm.com/cdn/shop/files/C_CTac_ArronSmithSBTStyleM4BraceStock_ForTokyoMaruiM4MWSSeries_BLK_9d4912ba-8987-4784-87c8-fc796c468ed1.jpg?v=1714737156&width=950)
![[Army Force] 2inch Stubby Outer Barrel Adapter Base[For WA M4 GBB Series]][SV]](http://www.sixmm.com/cdn/shop/files/ArmyForce_2inchStubbyOuterBarrelAdapterBase_ForWAM4GBBSeries_SV.webp?v=1710316812&width=950)
![[Army Force] Steel Hammer [For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/files/Untitled-1_aaf1030f-393e-4aba-8af3-be202822b888.jpg?v=1706671289&width=950)
![[Angry Gun] Airborne Ambi Charging Handle [Original Model] [WE, VFC, GHK GBB M4/ Systema PTW] [BLK]](http://www.sixmm.com/cdn/shop/products/1_69b33109-f199-4c40-9d94-5f631153d6b8.jpg?v=1678015255&width=950)
![[Angry Gun] Airborne Ambi Charging Handle [Original Model] [WE, VFC, GHK GBB M4/ Systema PTW] [BLK]](http://www.sixmm.com/cdn/shop/products/21_5fe6e517-937e-4d0d-9119-dcb3f79411c6.jpg?v=1678015255&width=950)
![[Golden Eagle] GE-MC6589M BAD Carbine W/ 12.5inch MLOK Rail System[GHK M4 GBB Based]](http://www.sixmm.com/cdn/shop/products/GoldenEagle_GE-MC6589MBADCarbineW12.5inchMLOKRailSystem_GHKM4GBBBased_3.png?v=1669035924&width=950)
![[Golden Eagle] GE-MC6589M BAD Carbine W/ 12.5inch MLOK Rail System[GHK M4 GBB Based]](http://www.sixmm.com/cdn/shop/products/GoldenEagle_GE-MC6589MBADCarbineW12.5inchMLOKRailSystem_GHKM4GBBBased_4.png?v=1669035924&width=950)
![[Z-Parts] Complete Set Steel Bolt Carrier with Loading Nozzle [For VIPER VI-46 GBB]](http://www.sixmm.com/cdn/shop/products/Z-Parts_CompleteSetSteelBoltCarrierwithLoadingNozzle_ForVIPERVI-46GBB_4.jpg?v=1640844648&width=950)
![[Z-Parts] Complete Set Steel Bolt Carrier with Loading Nozzle [For VIPER VI-46 GBB]](http://www.sixmm.com/cdn/shop/products/Z-Parts_CompleteSetSteelBoltCarrierwithLoadingNozzle_ForVIPERVI-46GBB_1.jpg?v=1640844648&width=950)
![[Z-Parts] Steel Bolt for VIPER VI-46 GBB](http://www.sixmm.com/cdn/shop/products/1_01ea976a-7f14-470c-81d7-9b069963b0c3.jpg?v=1611730442&width=950)
![[Z-Parts] Steel Bolt for VIPER VI-46 GBB](http://www.sixmm.com/cdn/shop/products/2_774f5a61-0d8b-4b23-96f8-94413ddfa946.jpg?v=1611730442&width=950)
![[Z-Parts] Mk12 Mod1 Handguard Set for VIPER M4 GBB](http://www.sixmm.com/cdn/shop/products/viper-m4-007-01.jpg?v=1611824523&width=950)
![[Z-Parts] Mk12 Mod1 Handguard Set for VIPER M4 GBB](http://www.sixmm.com/cdn/shop/products/viper-m4-007-02-2brighter-logo.jpg?v=1611824523&width=950){kind=logo}
![[Z-Parts] CNC Steel 90° 3 Burst Ambi Selector For WA System M4 GBB](http://www.sixmm.com/cdn/shop/products/img_7542-2-logo_da037092-ce3e-4985-975a-9ac82d9ed615.jpg?v=1611815566&width=950){kind=logo}
![[Z-Parts] CNC Steel 90° 3 Burst Ambi Selector For WA System M4 GBB](http://www.sixmm.com/cdn/shop/products/img_7543-2-logo_dfcc4737-8f54-4161-87ad-32d738f81c6e.jpg?v=1611815566&width=950){kind=logo}
![[Z-Parts] CNC Steel 60° 3rds Burst Selector For WA System M4 GBB](http://www.sixmm.com/cdn/shop/products/img_7549-2-logo.jpg?v=1612167307&width=950){kind=logo}
![[Z-Parts] CNC Steel 60° 3rds Burst Selector For WA System M4 GBB[Z-Parts] CNC Steel 60° 3rds Burst Selector For WA System M4 GBB](http://www.sixmm.com/cdn/shop/products/img_7546-2-logo.jpg?v=1612167307&width=950){kind=logo}
![[Z-Parts] CNC Al Alloy Charging Handle For AR / 416 Rifle [BLK]](http://www.sixmm.com/cdn/shop/products/z-kit-010-1.jpg?v=1612167035&width=950)
![[Z-Parts] CNC Al Alloy Charging Handle For AR / 416 Rifle [BLK]](http://www.sixmm.com/cdn/shop/products/5.jpg?v=1612167035&width=950)
![[Z-Parts] 416 SMR 14.5" handguard for SYSTEMA from Zparts / VIPER](http://www.sixmm.com/cdn/shop/products/416-smr-14.5__-002.jpg?v=1611810626&width=950)
![[Z-Parts] 416 SMR 14.5" handguard for SYSTEMA from Zparts / VIPER](http://www.sixmm.com/cdn/shop/products/416-smr-14.5__-004.jpg?v=1611810629&width=950)
![[Z-Parts] 18 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-003-01.jpg?v=1619500529&width=950)
![[Z-Parts] 18 inch Steel Dimpled Outer Barrel for VIPER SR16 GBB](http://www.sixmm.com/cdn/shop/products/viper-sr16-003-0a.jpg?v=1619500529&width=950)
![[Maddog] M4 Lower Receiver[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/10452__Maddog__M4_Lower_Receiver_For_WA_M4_GBB_Series_1.jpg?v=1610936665&width=950)
![[Maddog] M4 Lower Receiver[For WA M4 GBB Series]](http://www.sixmm.com/cdn/shop/products/10452__Maddog__M4_Lower_Receiver_For_WA_M4_GBB_Series__1_1.jpg?v=1610936667&width=950)