https://www.amazon.com/Plano-1312-Range-Bag-Black/dp/B00VKPSHIQ this is what I use, I have a larger box of stuff but I can convert this one to whatever I need for travel, holds my comp gear easily, Carrie’s a fuckton of shotgun ammo when I’m going out into the field, tools to work on my rifle if I need to. I highly recommend it.
I think where I got it is sold out but I would check palmetto state armory. Or just buy an Amazon knock off I put one on my 22 build and I really can’t tell a difference except it’s more snug fit to the buffer tube than the real thing. I think they are just second run rejects I found for hella cheap AcmeCreat Adjustable Durable Polymer Fixed Stock Outdoor Sport Tools (Style 3) https://www.amazon.com/dp/B09B3XQNWL/ref=cm_sw_r_cp_api_i_X0GQH60XXXYR1E0BFJ3X?_encoding=UTF8&psc=1
I was disappointed to find out the gg&g light mount stuck out that far. I ordered this one but directly from CDM in texas
CDM GEAR ROC-12 Light Mount https://www.amazon.com/dp/B081NTW9TM/ref=cm_sw_r_apan_i_9CS2TSNXGYR08KV7V8S1.
FAQS say theyre a small small business so they can only do so much so fast. If i wouldve known they could take up to 7-10 business days to order i wouldve ordered off amazon, midway, or mounts plus and have it shipped within 3 days.
I had a GG&G mount for my M1014 and it stuck out almost two inches off the handguard with a TLR-1 on it so I'm not a fan of their mounts.
Amazon has this CDM mount and it could be delivered in two days for me. https://www.amazon.com/Light-Mount-Compatible-Mossberg-Shockwave/dp/B075Y8VNN5?th=1
If you have a 590, the bayonet lug is going to cast an obnoxious shadow. Even if you have a 500 or an 18" 590 without the lug, I'd still advise against it because the Surefire forends are enormous to my hands. I bought one of these and put a TLR1 on it when my 590 rotates into bedside duty. https://www.amazon.com/Light-Mount-Compatible-Mossberg-Shockwave/dp/B075Y8VNN5?th=1
You can use a Streamlight 69906 mount on the 930 if you want something that doesn't clamp on. I'd suggest putting an O ring behind it so it doesn't back off under recoil though. https://www.amazon.com/Streamlight-69906-Strmlght-Shotgun-Rem870/dp/B001G61K74
I wouldn't recommend a single point but if you use them and like them, cool. You could get something like this and then attach your sling with an HK hook. Looking at the design of this though, if you were local, I could sew this for you in about 20 minutes.