300 Blackout 7.5" Barrel with Front Sight Base

Perfect for your build. 

Features:

7.5" 4150 P 1x8 Twist Barrel

Comes with:

F Marked A2 Front Sight Block

Front Sight

Front Sight Detent 

Front Sight Detent Spring

Pistol Length Gas Tube and Pin

Sling Swivel

Sling Swivel Rivet

2 Stainless Steel Taper Pins

Handguard Cap