King Arms 300 Round Luminous Tracer BB Ready Airsoft AEG Magazine

"I got one for my M4 with Tracer BBs and it works great. had not problems with it planning to order more.

"Worked for me fine as a high cap magazine, but by the time the bb leaves the barrel it is dull to the point of no visibility. Just not a good design unless you basicly doing a mag dump every time then by about the 10th bb they start looking bright... until you stop shooting. In semi-auto never expect to see a tracer round.

"Don't buy this. If you can work on a gun, get a hop-up tracer unit. Your wallet will thank you.

"It "works" but not really. Because of the design, you really won't see any illumination on the BBs. I bought one to cut down on barrel length, but it's functionally worthless in CQB/Semi only fire. I've gone back to a short mock suppressor tracer unit.

"They don’t work very well , or at all really. Tried at a lights-out CQC game and at night in the yard. Didn’t see much of anything.