DS Main Springs

Here are the following main springs used for MPA Pistols:

• DS9 Hybrid 9mm – 17lb ISMI
• DS9 LOC – 17lb ISMI with 3 coils cut off
• DS Open (38SC and 9mm) – 17lb ISMI with 3 coils cut off
• DS Open Steel Challenge – 17lb ISMI with 3 coils cut off
• DS40 – 17lb ISMI
• Commander – 17lb ISMI
• We DO NOT recommend using 15lb main springs