If the slide fits and functions properly there’s no reason it would be unsafe.
The one piece stainless slide is actually better for the aluminum frame because it doesn’t have a separate breechblock that must be held tightly to prevent the slide from flexing and putting additional stress on the frame. (That’s why the breechblock retaining pins in older slides should be replaced at least every 5000 rounds.)
► 6.4/93.6
“ Enlightenment is man’s emergence from his self-imposed nonage. Nonage is the inability to use one’s own understanding without another’s guidance. This nonage is self-imposed if its cause lies not in lack of understanding but in indecision and lack of courage to use one’s own mind without another’s guidance.” — Immanuel Kant
Posts: 48045 | Location: 10,150 Feet Above Sea Level in Colorado | Registered: April 04, 2002