16″ 300 Blackout 7″ Quad Rail Upper Assembled Rifle Kit with No Lower
Original price was: $519.00.$329.95Current price is: $329.95.
A .300 Blackout upper kit with a 7″ Quad Rail Picatinny handguard, pistol-length gas system, and mil-spec bolt carrier group. Chrome moly/nitride barrel, 1×8 twist. No lower receiver included — not an FFL item.
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This .300 Blackout Rifle Kit pairs a 7″ Quad Rail Picatinny handguard with a pistol-length gas system, giving you a compact, subsonic-friendly upper ready to mount on your own AR-15 lower. The chrome moly barrel is nitride processed for corrosion resistance and long service life.
- Chamber – .300 AAC Blackout
- Twist – 1 x 8
- Barrel Thread – 5/8″ x 24
- Barrel Steel – Chrome Moly, Nitride Processed
- Gas System – Pistol-Length
- Gas Block – .750″ Gas Block
- Handguard – 7″ Quad Rail Picatinny Handguard
- Upper Receiver – M4 Flat-Top w/ Barrel Nut & Delta Ring Assembly
- Bolt Carrier Group – Mil-Spec BCG
- Charging Handle – Included
- Lower Parts Kit – Mil-Spec LPK
- Origin – Made in the USA
What’s Included: Assembled M4 flat-top upper, mil-spec BCG, charging handle, and mil-spec lower parts kit. Lower receiver is NOT included — pair it with any AR-15 80% lower, and this kit ships as a non-FFL item.
See more configurations in our .300 Blackout rifle build kits collection, or grab a matching 80% lower receiver to complete the build.
| Weight | 8 lbs |
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| Accessory Attachment Style | Picatinny |
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Does this kit include a lower receiver?
No. This kit ships without a lower receiver, so it is not an FFL item.
What handguard and gas system does it use?
A 7″ Quad Rail Picatinny handguard with a pistol-length gas system, suited to both supersonic and subsonic .300 Blackout loads.
What twist rate is the barrel?
1×8 twist, chambered in .300 AAC Blackout.
Is the bolt carrier group and charging handle included?
Yes, a mil-spec BCG and charging handle are both installed.
Can I upgrade components before I order?
Yes, upgrade options for the BCG, lower parts kit, and flash hider are available at checkout.
Is this kit made in the USA?
Yes, the kit is assembled in the USA.
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