Welcome, I'm sure others shall chime in, but here are two kydex makers who might be able to help you, they both helped me, not familiar with retention levels, but they are.

Insane Kydex Creations:

Insane Kydex Creations

INSANE KYDEX CREATIONS CUSTOM HOLSTERS & ACCESSORIES IWB HOLSTERS Inside The Waistband Kydex Holsters SHOP NOW OWB HOLSTERS Outside The Waistband Kydex Holsters SHOP NOW READY TO SHIP HOLSTERS Select from our styles of ready to ship holsters with fast shipping! SHOP NOW

insanekydexcreations.com

Or

Odin Holsters:

Top Quality Holsters Kydex Free Shipping Option

Best Concealed Holster. Glock, Canik, FN America, H&K, Sig Sauer, Smith & Wesson, Staccato, Springfield. Streamlight, Surefire, Hellcat, Xmacro, Beretta

odinholsters.com

Good hunting and welcome aboard.

 

This will be my new duty weapon so will need to be duty grade if that's a thing Have used safariland for my glocks but wanted more options.

 

Safariland is pretty much your only option.

 

Safariland would still be my go to, you should be able to get a decent discount through govx or verify ID.me. HK has picked up a few agency contracts since the a1's release so I'm hoping that will push Safariland to push some updates as well.

 

Safariland is a top choice. Have a few guys that are running a Dara Holster. They look to be a good quality and guys like them. Unfortunately, decent duty gear and cheap is rarely a thing. Stay safe.