Product Details

Rattlesnake Tactical proudly offers their Lightweight 300 Blackout RT15 rifle, to pair with the lightweight RT15 in 223/5.56. This 300 Blackout RT15 weighs in at 6.15 pounds, making it a perfect host for additions like magnified optics, bipods, or aftermarket furniture. The lighter-weight frame makes handling your weapon with a fully loaded magazine much easier, especially with 300 Blackout's considerably heftier weight per round compared to a standard 5.56 or 223 grain weight. While many manufacturers stray away from the lightweight original concept behind the AR15, RTAC wants to provide you with a versatile, powerful, and ergonomic 300 blackout rifle that honors the traditional intention of the AR platform. 

With a 300 Blackout RT15 you can utilize subsonic ammo with a suppressor for maximum stealth, then easily swap mags for full power supersonic ammo to engage targets in the distance. American Special Operations soldiers were the original target market for 300 Blackout, as they needed a versatile heavy hitter like this. The 300 Blackout was created for them, providing these troops with a weapon that could be silent during their mission and still capable of ranged engagements if things went "loud". The RTAC 300 Black rifle comes sheathed inside the handsome 15" MLOK rail you see pictured above, which covers the low-profile carbine-length gas-system and barrel. You will receive a fully-complete rifle, including a Red-dot site, a full bolt carrier group, charging handle, and flash-hider. 

The RTAC Mag Marker band exists to help identify the various calibers that PMAGs can contain these days. This RT-15 is chambered in 300 Blackout, so it comes with the appropriate 300 BLK Mag Markers. These 300 BLK markers come in black only, and fit perfectly around PMAGs or other AR magazines.

Your new Lightweight 300 BLK RT15 ships with a NS130 red-dot, 5 Black Mag Markers, a 15" Cable Lock, a Magpul PMAG, and a manual. Specifics listed below.

RTAC 300 BLK Complete Upper

  • 16” Heavy Barrel, 4150 Steel, Parkerized Finish, Chrome Moly Vanadium, 1:8 Twist
  • Carbine Length Gas System
  • 15” MLOK Rail for accessories 
  • M4 Flat-Top Forged Upper Receiver for Optics
  • Full Bolt Carrier Group + Charging Handle
  • Flash Hider

E3 Arms Gen II Polymer Complete Lower Receiver

  • Proprietary Glass-Filled Nylon 6
  • Oversized Trigger Guard
  • Ergonomic, Grooved Grip
  • E3 Arms Gen II lower receivers include a limited lifetime warranty through E3, their manufacturer

All polymer lowers from E3 come with their castle nut tightened to 6-8 ft lbs of torque, with Blue Loctite applied to the threads. E3 does NOT recommend tightening the castle nut beyond factory conditions.

More Information

More Information
Category Guns
Caliber 300 AAC Blackout
Manufacturer SKU RT15-POLY-300BLKB
Condition New
Suggested Use Self Defense, Hunting / Varmint, Competition / Sport
Model RT-15
Color Black
Manufacturer Rattlesnake Tactical

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