archwick gbb lob 113 mmWhen precision and reliability are paramount, ARCHWICK's 113 mm precision barrel is an obvious choice. This inner barrel is made of durable brass and has an inner diameter of only 6. 03 mm , which significantly improves both precision and range compared to standard barrels. The polished interior of the barrel ensures that the BBs travel through smoothly, providing consistent shots and increased accuracy whether you're playing up close in CQB or at