.300 Blackout Pistol 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 Pistol Uppers

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Choosing a 300 Blackout Pistol Upper

With or without a BCG and charging handle

Most ship "No BCG or Charging Handle"; some include them. Check the product title — it's the key price detail.

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 when the listing says so. No sights or optics.

Why 300 Blackout in a short upper

300 BLK was designed for short barrels, so it loses far less than 5.56 in a pistol-length build, and it runs well subsonic and suppressed. It uses the same lower, bolt, and magazines as 5.56 — only the barrel/upper differ.

Frequently Asked Questions

Do these uppers include a BCG and charging handle?

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

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

Yes — standard AR-15 bolt and 5.56 magazines. Keep 300 BLK and 5.56 ammo separated, since 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.