Failure to feed in g20 2nd gen - Lone Wolf Arms AlphaWolf Glock 20 Threaded Pistol Barrel

I have read both good and bad reviews for this product. My experience was bad. I really wanted this Lone Wolf AlphaWolf threaded barrel to work so I had even checked the manufactures website before ordering from Optics Planet to ensure the threaded barrel was OK for the full size G20 gen 2. However out of a loaded mag only ONE of 8 rounds actually made it into the chamber before I gave up. I use only high end jacketed hollow point ammo. 7 of 8 attempted cycles jammed hopelessly. I suspect either the manufacturers quality control, or product design, or application information is BAD. I also note the manufacturer has not been very helpful to other people with problems. I therefore will return this product to Optics Planet for a credit and order a non threaded 6" GLOCK barrel which I know will feed correctly. And I can have the end of the longer barrel threaded by a gunsmith if desired. Unfortunately Glock does not appear to offer such an option. I will not risk ordering any more Lone Wolf products since they appear to be hit and miss on their usefulness. I have been an Optics Planet client for many years with hundreds of items ordered and this is the first one I have had a problem with. As a side note, I ordered a threaded barrel for a Glock 22 gen 2 (40 S&W) made by SilencerCo that works perfectly out of the box so I know that supplier has quality products, but unfortunately they don't offer a threaded barrel for the G20 models.