Radical Firearms 16" 5.56 NATO 1:7 Carbine Length M4 Barreled Upper - 12" KeyMod FTR Rail

SKU: FU16-5.56M4-12FTR
MPN: FU16-5.56M4-12FTR
Manufactured by Radical Firearms
2 Reviews



In Stock

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Barrel Coating
Barrel ContourM4
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandRadical Firearms
Caliber Gauge5.56 NATO
Gas System LengthCarbine
Gas System TypeDirect Impingement
Handguard12 in Radical KeyMod FTR Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

Ratings & Reviews

2 reviews

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Radical FA 1:7 Carbine 12" Keymode


I caught this assembled upper on sale. Came in a very safely packaged doubled box and was well oiled in the plastic wrapper. Shipping was very quick. Mated this up with all other Mil-Spec parts lower and could not be happier about the quality of this product. Fit and finish is excellent.

Radical quality, low price!

by -

Super slim keymod rail is slick! Dropped this on a lower I had laying around, with a set of flip up sights, it makes a beauty bare bones set-up. Very clean look, and runs just like a high dollar upper. My third Radical upper and no complaints what so ever. Again, I really like this slim rail.