1. Cleaning an MAE T12?!??!

    I've got these on my two rimfires and .243 - the new one's are a sealed unit (non-strippable) - I've been using a squirt of WD40 but when I look inside the mods they're still pretty full up with gunk! I've heard of washing them with petrol (then drying them out), or using hot soapy water (then...