I purchased a Dakota safety / bolt shroud for the two 7mm's, ( Brownell part 359-141-070WB Model 70-Style Shroud Mfr Part: EMUNNN001 approx. $150) and a Recknagel for the 8mm.

The Recknagel came from NECG, cost a bout $250 and is a very very good safety / shroud. It is silver colour however, not my first preference. It has a locking tab that is particularly nice. Press down with your thumb while moving it off safe, instinctive and smooth with zero chance of bumping the safety off accidentally.

The old shroud is removed, the new one simply screwed on, however the notch for the safety catch on the firing pin must be properly fitted by a gunsmith. All in, about a $300 job. Well worth it IMHO.