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This 300 Blackout upper assembly is the Patent-Pending forward charging system designed and manufactured by Bilson Arms. This upper receiver is made of 4140 Nitride Chromoly and comes in 4 standard Cerakote colors. This item can be purchased separately and fits any standard size AR15. Optional Cerakote colors available with an upcharge.
Cerakote
4140 Nitride Chromoly Steel
16"
1:7
A2 Birdcage, 1/2 - 28
Mid-Length
Billet Aluminum
M-Lok
Free-Float
Picattiny