The Atlas Gunworks Overpowered Magazine Spring is designed to ensure reliable lockback on double stack platforms when used with the Atlas Lockbak Follower and a lockback slide stop.
This spring is compatible with 120mm and 126mm magazines, with the +15% spring being optimal for these sizes.
It is available in two strengths: +15% for 120mm/126mm magazines and +18% for 126mm/140mm magazines, to suit different magazine lengths.