My suggestion is always to look at Safariland's holsters, at http://www.safariland.com. Their ALS holster system provides the same security level as the CQC Serpa you mentioned. I honestly don't know if they make holsters for your specific firearm, but I'd be surprised if they don't. If you don't see your firearm on their list, give them a call and ask. Their customer support is second to none.