Spare Magazine for all Well D3 and D4 Series M4's & BV Series
This is a good mag to have as it fits a large range of m4 rifles
It fits all well m4 rifles that start with the number D3 or D4 (like the 4
So DONT LOSE your next BBGUN battle.
and stop geting yourself shot while you are re-loading your rifle.
Get a spare magazine loaded and ready for action and you will be doing the shooting.