Quick view Details ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK MSRP: Now: $254.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard MSRP: $339.99 Now: $219.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard MSRP: $279.99 Now: $229.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard MSRP: $263.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: Now: $254.99 Compare Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view Details ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard MSRP: $339.99 Now: $219.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard MSRP: $279.99 Now: $229.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard MSRP: $263.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: Now: $254.99 Compare Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view Details ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard MSRP: $279.99 Now: $229.99 Compare Quick view Details ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard MSRP: $263.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: Now: $254.99 Compare Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view Details ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard MSRP: $263.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: Now: $254.99 Compare Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view ZAVIAR Firearms | sku: Z70781 5.56 Nato 'Operator Series' **Titanium Blue** 16" Nitride Government Upper Kit / 1:8 Twist / 15" MLOK Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: Now: $254.99 Compare Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view ZAVIAR Firearms | sku: Z40553 5.56 Nato 'Operator Series' 16" Nitride Government Upper Kit / 1:8 Twist / 15" KeyMod Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 16" Government Carbine Length Gas... MSRP: $339.99 Now: $219.99 Compare Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected × OK
Quick view ZAVIAR Firearms | sku: Z40292 5.56 Nato 'Operator Series' 10.5" Nitride Upper Kit / 1:7 Twist / 10" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 10.5" Nitride Carbine Length Gas... MSRP: $279.99 Now: $229.99 Compare Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected
Quick view ZAVIAR Firearms | sku: Z40262 5.56 Nato 'Operator Series' 7.5" Stainless Steel Upper Kit / 1:7 Twist / 7" MLOK Handguard Best Use: Varmint Hunting / Mid Range Shooting Specifications: Caliber: 5.56 Nato Upper Receiver: Stripped Upper Receiver Upper Parts Kit Barrel: 7.5" Stainless Steel M4 Pistol Length... MSRP: $263.99 Now: $229.99 Compare Compare Selected