The Nuprol RZR 0.25gr Bio Tracer BBs 6000rds (1.5KG) come in a large resealable bag and light up green when shot through the tracer unit.

Nuprol has had a triple polish performed on these bb's so they fly even more cleanly towards their target. The diameter of these bb's is 5.95mm so they can also be used in tightbores. (Tightbores have a smaller diameter than 6.03mm barrels).

See where you bb's are going with these awesome bb's