Hi everyone. I have a pre-64 Md. 70 featherweight in 308 that I plan on having rebored by JES to 358 Win. I thought it would be nice to have a peep sight installed and keep it iron sighted for my intended purpose. I want to keep the action original and I don’t want to drill holes in the receiver. Does anyone make a quality peep sight that would mount to the existing receiver holes?