5.56mm Build Kits
At Grid Defense, we offer a wide selection of 5.56mm AR-15 build kits to help you create the perfect custom rifle. Our 7.5", 10.5" and 16" kits include everything you need to build a high-quality, reliable rifle, including barrels, handguards, stocks, and more.
-
Ghost Vital 16" 5.56 Rifle Kit
Sale: $429.00MSRP: $499.00Ghost Firearms Vital 16" Upper A2 Birdcage Flash Hider 16" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 11" M-Lok Free Float Hand Guard Ghost Mil-Spec 7075 T6 Upper...Sale: $429.00MSRP: $499.00 -
Ghost Vital 7.5" 5.56 Pistol Build Kit With Nickel Boron Lower Parts kit
$499.00Ghost Firearms Vital 7.5" Upper Premium quality AR-15 pistol build kits, the Defense Grid 5.56 pistol kit, with complete lower parts and pistol buffer tube kit. Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7...$499.00 -
Ghost 16" 5.56mm with 14" M-Lok Rifle Kit - FDE
Sale: $449.00MSRP: $599.00Ghost Firearms 16" Rifle Kit - FDE Flat Dark Earth (FDE) Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $449.00MSRP: $599.00 -
GHOST FIREARMS 7.5" 5.56mm with 7" M-Lok Pistol Kit - FDE
Sale: $439.00MSRP: $579.00GHOST FIREARMS 7.5" 5.56 NATO PISTOL KIT - FDE Finished in Flat Dark Earth Cerakote Chambered in .223/5.56 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 1/2x28 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel...Sale: $439.00MSRP: $579.00 -
Ghost Vital 7.5" 5.56 Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 7.5" Upper Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 7.5" 1:7 Twist 4150 M4 Barrel Black Nitride Pistol Length Gas System Ghost Firearms 7" M-Lok Free Float Hand Guard Ghost...Sale: $419.00MSRP: $479.00 -
Ghost Vital 10.5" 5.56 Pistol Kit
Sale: $419.00MSRP: $479.00Ghost Firearms Vital 10.5" 5.56 Upper - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 10.5" 1:7 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 9" M-Lok Free Float Hand Guard...Sale: $419.00MSRP: $479.00 -
10.5" 5.56mm with 9" M-Lok Pistol Kit - Tungsten Gray
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5" Pistol Kit - Tungsten Gray Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:7 or 1:8 Twist 4150 Chrome Moly Steel Barrel Black Nitride Carbine Length Gas...Sale: $439.00MSRP: $579.00 -
7.5" 5.56mm with 7" M-Lok Pistol Kit Blue Titanium
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5" 5.56 Pistol Kit - Blue Titanium Blue Titanium Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $439.00MSRP: $579.00 -
Ghost Firearms 7.5" 5.56mm with 7" M-Lok Pistol Kit OD Green
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5" Pistol Kit - OD Green OD Green Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-Spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $439.00MSRP: $579.00 -
Ghost Firearms • Magpul 5.56 A2 Complete Rifle Kit Minus Lower
$499.00Ghost Firearms Magpul™ A2 Rifle Kit comes with a complete A2 upper, LPK, and Magpul™ Moe Stock assembly. Everything needed to build an AR-15 / M4 rifle minus the lower receiver. UPPER: Ghost Firearms...$499.00 -
Ghost 10.5" 5.56 Pistol Kit - Burnt Bronze
Sale: $439.00MSRP: $579.00Ghost 10.5" 5.56 Pistol Kit - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black Nitride...Sale: $439.00MSRP: $579.00 -
10.5" 5.56mm with 9" M-Lok Pistol Kit Blue Titanium
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5" 5.56 Pistol Kit - Blue Titanium Premium AR-15 pistol build kits, the M-Lok pistol kit with A2 flash can. Finished in blue titanium cerakote. Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging...Sale: $439.00MSRP: $579.00 -
Ghost Vital 16" 5.56 Rifle Build Kit With Nickel Boron Lower Parts kit
$529.00Ghost Firearms Vital 16" Upper - Black Chambered in 5.56x45 NATO (5.56/.223) A2 Birdcage Flash Hider 16" 1:7 or 1:8 Twist 4150 M4 Barrel Black Nitride Carbine Length Gas System Ghost Firearms 11"...$529.00 -
Ghost Firearms 16" 5.56mm with 14" M-Lok Rifle Kit - Burnt Bronze
Sale: $399.00MSRP: $599.00Ghost Firearms 16" 5.56 Rifle Kit - Burnt Bronze Burnt Bronze Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:7 Twist 4150 Chrome Moly Steel Barrel...Sale: $399.00MSRP: $599.00 -
7.5" 5.56mm with 7" M-Lok Pistol Kit - Tungsten Gray
Sale: $439.00MSRP: $579.00Ghost Firearms 7.5" Pistol Kit - Tungsten Gray Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black Nitride Carbine Length Gas...Sale: $439.00MSRP: $579.00 -
10.5" 5.56mm with 9" M-Lok Pistol Kit OD Green
Sale: $439.00MSRP: $579.00Ghost Firearms 10.5" 5.56 Pistol Kit - OD Green OD Green Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 10.5" 1:7 Twist 4150 Chrome Moly Steel Barrel Black Nitride...Sale: $439.00MSRP: $579.00 -
Ghost Firearms 7.5" 5.56mm with 7" M-Lok Pistol Kit - Burnt Bronze
Sale: $379.00MSRP: $579.00Ghost Firearms 7.5" 5.56 Pistol Kit - Burnt Bronze Burnt Bronze Cerakote Finished Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 7.5" 1:7 Twist 4150 Chrome Moly Steel...Sale: $379.00MSRP: $579.00 -
Ghost Firearms 16" 5.56mm with 14" M-Lok Rifle Kit - OD Green
Sale: $449.00MSRP: $599.00Ghost Firearms 16" Rifle Kit - OD Green OD Green Cerakote Finish Chambered in 5.56/.223 (5.56x45mm) M16 Bolt Carrier Group Mil-spec Charging Handle A2 Flash Hider 16" 1:7 Twist 4150 Chrome Moly Steel Barrel Black...Sale: $449.00MSRP: $599.00