.300 Blackout Rifle upper assemblies — a barreled, assembled upper ready to drop onto your AR-15 lower. Includes the upper receiver, barrel, gas system, handguard, and muzzle device; most ship without a BCG or charging handle (some include them — check the title). No sights or optics.

300 Blackout Rifle Uppers

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Choosing a 300 Blackout Rifle Upper

With or without a BCG and charging handle

Most ship "No BCG or Charging Handle"; some include them. The product title says which.

What's in the assembly

Upper receiver (forward assist + dust cover), barrel, installed gas block and tube, handguard, and muzzle device — assembled. BCG and charging handle only if listed. No sights or optics.

Why 300 Blackout

300 BLK runs on the standard AR-15 platform — same lower, bolt, and magazines as 5.56, only the barrel/upper differ. A longer barrel maximizes supersonic velocity, and the caliber still suppresses well subsonic.

Frequently Asked Questions

Do these uppers include a BCG and charging handle?

Depends on the listing — most are "No BCG or Charging Handle." Check the title.

Does 300 Blackout use the same BCG and magazines as 5.56?

Yes. Keep 300 BLK and 5.56 ammo separated — 300 BLK can chamber in a 5.56 barrel with dangerous results.

Do you need an FFL to buy an upper?

No. The upper isn't the serialized part, so it ships without an FFL.