The Jet Funnel is a new companion to my HK .40 Expert. It is easy to install and has revolutionized my HK experience Paired with my new HK 16 round mags also purchased from Bud’s. Ten round mags and thirteen round are not compatible with the Jet Funnel. Make sure you purchase 16 round mags from Bud’s when you order the HK Jet Funnel.

Necessary to utilize the 16 round mag which Bud's sells. Easy to install. No problems with it or the mags I bought. Would recommend.

Great product love the website fast shipping the jet funnel fit with no issues was able to install within 10 minutes. Great website.

Impressive transformation of H&K UPS S&W 40 pistol from 10 round magazines to 16 round magazines. Easy to install, perfect fit, and performance. Increasing capacity of the pistol by 60%. If you carry an H&K UPS the jet funnel and 16 round magazines make a great addition to a solid handgun platform.

Perfect! Best price on web and came in plastic bag directly from H&K factory in Germany, 9 hours from my order I had a tracking number, two days later and I was firing my pistol! I would highly recommend the jet funnel upgrade. You have to buy the white 16 round magazines to go along with this but it's well worth the price and buds is $20 cheaper than anyone at the time of writing this. I will only get stuff from buds from now on, there was no runaround or problems, it didn't sit in warehouse for two days it shipped! Other places could learn from this.

Installation is easy, fit and finish is what you would expect from HK. Does exactly what it is supposed to and the only negative I can think of is you are limited to the extended mags. If I had a bunch of standard mags, I probably would not spend the extra money for this upgrade knowing that I would have to replace them.