Nine Ball 6.00mm Bore Full-Size Power Inner Barrel For Tokyo Marui P320 GBB (105.9 mm)

Price: $34.15 — In stock at 1 retailer.

Prices last checked July 29, 2026 across 1 retailer.

For airsoft enthusiasts who demand the utmost in accuracy and power, the inner barrel is far more than a simple tube?it is the heart of every shot. The Nine Ball 6.00mm Bore Full-Size Power Inner Barrel for the Tokyo Marui P320 GBB pistol embodies this philosophy through meticulous engineering and high-grade materials. This is a tight-diameter stainless steel inner barrel with an inner diameter of exactly ?6.00mm, held to a dimensional tolerance of just ?0.01mm. To achieve this remarkable level of precision, Nine Ball has carefully selected both the raw materials and the manufacturing process, ensuring that every barrel delivers consistent, repeatable performance. Unlike standard barrels that may rely on various surface coatings, this power barrel takes a different approach. It eliminates unnecessary coatings entirely, focusing instead on maximizing operational efficiency and shooting accuracy. By presenting a clean, uniform, and exceptionally smooth bore surface, the barrel reduces friction and air leakage around the BB, allowing for more efficient gas expansion. The result is a tangible increase in muzzle velocity (FPS) without requiring any other modifications to your pistol, giving you a distinct advantage in both range and target impact. Constructed entirely from metal for lasting durability, this full-size inner barrel measures precisely 105.9mm in length, making it a direct drop-in fit for the Tokyo Marui P320 GBB airsoft gun. The super tight 6.00mm bore diameter is specifically engineered for a ?power up? effect, creating a tighter seal around the BB. This design not only boosts FPS but also dramatically improves shot-to-shot consistency, allowing for tighter groupings and more precise shooting at extended distances. Whether you are competing in a tactical match or honing your skills on the range, the Nine Ball 6.00mm Power Inner Barrel transforms your P320 into a highly accurate and powerful sidearm, ready to perform at its absolute best. Key Feature Metal

Nine Ball 6.00mm Bore Full-Size Power Inner Barrel For Tokyo Marui P320 GBB (105.9 mm) price comparison: the lowest price is $34.15 at eHobby Asia, and the median across 1 tracked listing is $34.15.

Compatible with: P320, GBB Pistol

See all P320 magazines & fitment →

Which inner barrel fits Gas Pistol? Compare length, bore & prices →