I placed my order online and then received a call a couple of hours later from Randy and he let me know that the magazine tubes I ordered wouldn't match this spring kit. He then told me that he would change my order and send me the correct ones with the rest of my products. I have never experienced this from any company before and I greatly appreciate his help! They now have a life long customer. These springs in the 17 round Mecgar magazines will give your 18 and work flawlessly.

I purchased three (3) sets of the Magazine Spring and Follower Kit by Grams Engineering for my SP01. I'm running this pistol in USPSA's Carry Optic division so, these are being used in a magazine extended to 140mm. With the Mecgar OEM followers I could only get 20 rounds in these magazines. Switching to the Grams followers give me the ability to carry two (2) additional rounds; 22 in total. The feeding is reliable and I will be buy more in the future.