Home Forums Hunting & Shooting Hunting Rifles What size wrench for MRC 1999 trigger adjustment?

I have a set of 1/4" ignition wrenches for adjusting the lock nuts of old style Winchester Model 70 triggers but the ones on my MRC 1999 are bigger than 1/4". (Apparently MRC has bigger nuts than Winchester.)

Does anybody know exactly what size wrench the 1999 trigger adjustment nuts take?



And yes I called MRC and asked but had to leave a voice mail, and have sent them an email also. But while I'm waiting for a reply (XS sights never replied to my questions to them after three attempts over three weeks) I thought maybe some campfire member might know.