The Solo 300 is something new in the AR-15 world; a manually operated, straight-pull bolt action upper that requires no buffer tube. The result is the lightest, most compact weapon possible on the AR-15 platform.

The Solo 300 is compatible with any standard AR-15 lower, with or without buffer tube. And because it's built on an actual AR-15 upper receiver, it's compatible with all your favorite accessories, including free-float handguards and magazines of all sizes.

Whether you configure it as an SBR, braced pistol, or a true handgun, the Solo 300 upper gives you the lightest, most compact 300 Blackout on the market.

• 300 Blackout 
• 19oz (Complete upper) 
• 40-45oz Approx. total weight w/lower
• 6" Barrel, 416 Stainless 
• 5/8-24 threaded muzzle 
• 1-5" Twist 
• 5R Rifling 
• Fluted stainless thread protector
• Billet Aluminum Receiver 
• No FA / No Brass deflector  
• Compatible with buffer tubes, buffer hole plugs, and picatinny stock/brace adaptors (all available separately.)
• Optional Black Cerakote on barrel & bolt handle (+$30)
• Optional 5" Mlok handguard                                  (+$45)

Shipping and Handling

S&H to the United States is $14 via USPS