8.5" 300 Blackout Suppressor- Ready Upper for AR-15 with Chrome Moly HBAR Barrel and 12" SR M-LOK Rail
The 300 Blackout was engineered for exceptional performance from compact AR-15 platforms while reliably cycling both subsonic and supersonic ammunition. This 8.5" upper features a durable chrome moly HBAR barrel, pistol-length gas system, and 12" SR free-float M-LOK handguard for outstanding reliability, suppressor compatibility, and compact handling. It's an excellent choice for AR-15 pistol builds, short-barreled rifle configurations, and shooters looking for maximum maneuverability.
Quick Glance:
Caliber: 300 Blackout
Platform: AR-15
Barrel Length: 8.5 inches
Barrel Material: Chrome Moly Steel
Barrel Profile: HBAR
Barrel Finish: Parkerized
Twist Rate: 1:8 Twist
Gas System: Pistol Length
Handguard Length: 12 inches
Handguard Type: SR Free-Float M-LOK, Large Suppressor-Ready I.D. of 1.750"
Upper Receiver: Forged 7075-T6 Mil-Spec AR-15 Upper
Gas Block: .750" Low Profile Nitride
Muzzle Threads: 5/8x24
Muzzle Device: None
Headspace Checked: Yes – Manson GO and NO-GO Gauges
Assembly: Fully Assembled Upper Receiver Assembly
Full Details:
Upper Receiver:
AR-15 Mil-Spec forged aluminum upper receiver with forward assist and dust cover assembly installed. Forged from durable 7075-T6 aluminum and protected with a matte black MIL-A-8625 Type III, Class 2 hard coat anodized finish. The 7075-T6 construction provides greater strength than commonly used 6061 billet aluminum.
Barrel:
8.5" 300 Blackout barrel manufactured from durable chrome moly steel with an HBAR profile, Parkerized finish, and 1:8 twist rate. Features 5/8x24 muzzle threads, a standard AR-15 barrel extension with M4 feed ramps, and is professionally headspaced using Manson GO and NO-GO gauges. The pistol-length gas system is optimized for dependable cycling with both subsonic and supersonic ammunition, making this upper an excellent choice for suppressed and unsuppressed shooting.
Handguard:
SR 12" rifle-length suppressor-ready AR-15 free-float M-LOK handguard with large 1.750" inner diameter that will fit most modern suppressors. 2 standard QD quick disconnect ports, 1 on each on left and right side. M-LOK slots along the 3, 6, and 9 o'clock positions provide ample room for mounting lights, grips, sling attachments, and other M-LOK compatible accessories. Machined from 6061 aircraft-grade aluminum and protected with a matte black MIL-A-8625 Type III, Class 2 hard coat anodized finish.
IMPORTANT – SUPPRESSOR NOT INCLUDED
SUPPRESSOR SHOWN IN STOCK PHOTOS IS FOR AESTHETIC DEMONSTRATION PURPOSES ONLY AND IS NOT INCLUDED WITH PURCHASE. NO SUPPRESSOR OR MUZZLE DEVICE OF ANY KIND IS INCLUDED WITH THIS PURCHASE.
For reference, this upper assembly is shown with a Dead Air Primal 46 Suppressor that has an O.D. of 1.618 inches and is 7.9 inches in length.
Gas System:
Pistol-length gas system paired with a .750" low-profile gas block featuring a durable nitride finish. This gas system is optimized for reliable cycling with both subsonic and supersonic 300 Blackout ammunition while delivering smooth operation in suppressed and unsuppressed configurations.
Muzzle Device:
None
Headspace Checked:
Every barrel is professionally headspaced using Manson GO and NO-GO gauges to help verify proper chamber dimensions and dependable operation.
Ready to Install:
This upper arrives fully assembled and is compatible with all standard Mil-Spec dimension AR-15 lower receivers.
Important:
This product is not a firearm and will be shipped directly to you. No FFL transfer is required.
Ballistic Barn AR-15 uppers are American made and machined by manufacturers specializing in Mil-Spec AR-15 components. Every barrel is professionally headspaced using Manson GO and NO-GO gauges to help ensure dependable function and outstanding accuracy.
