Does the rail alone interfere with kydex holsters? Say if I wanted to remove the light and keep the rail on would it fit into my holsters I already have?

Really depends on the fit of the holster. The rail is a very snug fit so I wouldn't be surprised if it worked out but I can't say for sure.

Will this work w/ the s&w m&p 380 shield ez with a Sniper 5009R low profile laser mounted on the rail? I’m not sure what other laser setups that you have listed are similar in size & shape as the Sniper. I’m looking to get an OWB paddle holster for my wife’s gun with the Sniper laser.

While SHR9 is not compatible with S&W M&P 380 Shield EZ, you don't need it since S&W M&P 380 Shield EZ has a built-in Picatinny rail so Sniper 5009R should be compatible out of the box. We do have an OWB paddle-style (our G7 holster) holster but I don't think it will be compatible since it only works with full-sized Picatinny rails and the S&W M&P 380 Shield EZ is compact so the rail may not be long enough.

Will this fit the shield plus w/ 4” slide?

Yes, if it is a 9mm or SW40 pistol

will this product fit on a Smith & Wesson model 669

It does not. We make 2 charging handles for S&W. This one which fits on Shield, and this one for M&P.

I have the shield plus 3.1in 9mm. Will your rail fit my gun? Will it accommodate either the streamlight TLR 7A, sub or the TLR 8A? Thanks

Yes, it will fit, and it can accommodate the TLR models you mentioned with the addition of this key.

Will a TLR 7 sub 1913 fit this rail without a key? I saw on previous question you stated that the TLR-7A would need the key but didn’t see anything about the sub. I have a TLR-7 sub sig but it does not work with the rail, even when using the key.

You will need the key found here to make this setup work properly.

Will this rail adapter accommodate a Streamlight TLR-7A for my Shield Plus?

Yes - when used together with the TLR key. Here is a photo of them together:

I've used your rails for other weapons. I don't use the screws. I just use the clamp on the light to hold the rail adapter on. Is this an option for the Shield.

Can't say. We've never tested it that way.

When will the shield 45 adapter be available?

No plan at the moment. We will send out an email if/when that changes.

I use the attachment to place a light on my nightstand pistol, and when I want to take the pistol with me, I must remove the attachment and light for it to fit in a holster. Are there any holsters made to fit the Recovery SHR9 attachment and a light? If not, is there a better way to quickly remove the attachment screws and be able to quickly put it back on when I return home and want to place the pistol in my nightstand biometric vault?

We recommend and sell this one. If your light is not an option there, check out the "Holsters" tab above on this page for more suppliers who sell compatible holsters. Removal of the rail is simple but there is no faster way than using an allen key and screwing/unscrewing the screw that I'm aware of.