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We set out to make one of the most affordable complete uppers, without sacrificing the integrity of the complete upper, and most important the rifle. The NBS 6.8 SPC Quad Rail Upper Assembly, is a great all around upper, especially for hunting, which is why we included a KAK flash can. We wanted to direct the blast away from the shooter, to provide for a more pleasant shooting experience. The 6.8 SPC cartridge is also great in that fact there are many different weights and grains to use for this specific upper. This upper features a 16″ NBS M4 Contour barrel chambered in 6.8 SPC with a 1:10 twist and a carbine gas system, which would be considered an enhancer for this length of barrel. With the NBS line we wanted to make sure that we used quality products that wouldn’t break the bank. This means using a nitrided steel gas block from APOC Armory as opposed to aluminum and using quality internals like one of our classic NBS 16″ carbine barrels.
Made in the USA
Upper Receiver NBS
– 7075 Aluminum
– Pairs beautifully with any mil-spec lower
– M4 Feedramps
Barrel NBS 16″ 6.8 SPC II M4 Contour 1:10 Carbine 41V50 Barrel – Parkerized
Gas System Carbine Length
– APOC Armory Nitrided Steel Gas Block
– Stainless Steel Carbine Length Gas Tube
Handguard 16″ Free Float Quad Rail – Black
Muzzle Device KAK Industry 1/2-36 Slimline Micro Flash Can
GAS SYSTEM LENGTH
BARREL LENGTH (INCHES)
BCG / CHARGING HANDLE