On 7/5/2024 I ordered a 9MM Conversion kit + Mag combo: R&D Precision Magwell Conversion Block for Colt 9mm Magazines + Recoil Technologies AR-9 9MM Stainless Buffer + United Defense 9mm (9x19) BCG + Ammunition Storage Components 9mm Colt Style, 32 Round Capacity 3 Pack, item #CO-36083, from Delta Team Tactical. The kit arrived on 07/13/2024 and installed the same day. Testing over 07/13, 14 and 15 revealed that the mag block would not function properly with two 9mm uppers that had previously worked flawlessly Sylvan arms meg blocks. On the PM of 07/15/2024 I contacted the help desk for Delta Team Tactical with a detail message describing the malfunction and requested a RMA. On 07/16/2024, Jacob G. (Delta Team Tactical) responded by asking for a picture of the faulty part. Since this item was purchased as a kit and one component depends on the other I was requesting an RMA to return the kit. After a couple of emails on 07/18/2024, Jacob G. (Delta Team Tactical) responded with the following: “I can send you an RMA number and a shipping label after we receive pictures of the items that you are wanting to return. Please reply to this email with the pictures and I will send the shipping label”. I sent a picture of the advertisement with the part number and a picture of all the parts from the kit. I did not hear back so I sent the pictures a couple of days later. I have not heard from Jacob G. after sending the pictures. I have not had any problems in the past with orders from Delta Team Tactical and appreciated their great prices and fast shipping but this is over the top.