I am planning on a better stock.

Been gathering info for a few weeks.

If I go Lage retractable, the factory mags are fine but I understand the recon steel and possibly promag zytel ones are too wide for the stock to close. But I do not have to make any mods.

If I go Lage side folding, no issues with magazine width, but do I have to significantly mod my stock upper?

Also, if I go Lage upper, and I am really liking the AR height sights/railed upper, what kind of wait times are there these days? And what barrel lengths?

Thank you for any info,
getting my personal FA auto again with a little used purchase I made in the early 90s, the SWD M11.