The notch pattern is as follows for my Stoeger:
1 - Full
2 - IM
3 - M
4 - IC
no notch on mine is labeled cylinder on the side of the tube
Hope this helps ---AFG
1 - Full
2 - IM
3 - M
4 - IC
no notch on mine is labeled cylinder on the side of the tube
Hope this helps ---AFG