SP10 & SP45 Stribog UMP Lower

Excellent upgrade. The set screw has to be forced onto the lower the first time and takes finessing to get through the coating. Once it does, it made a big difference in tightness. INWT pins do work, A3 don’t. Get anti walk trigger pins.

Ive been a long standing customer of lingle since the beginning. Hes always put out amazing products and will continue to bet he puts out More competitive products as time goes on. The stribog 45 lower is exactly what I needed to put the finishing touches on my SS build.

Couldn't be happier! Being able to customize everything from the grip to triggers and safety selectors is a huge step up. I'm running a Geissele Super Dynamic 3 Gun trigger with radian safety selectors and it feels great. Definitely a step up from the polymer lower.

The only reason I didn’t rate the sp10 5 stars is because Lingle doesn’t have the lower small parts to compete the assembly. The take down pins on the factory lower doesn’t provide a tight fit. So a 4 not 5

The quality of this lower, is as the name suggest, a game changer. I'm beyond happy with the craftsmanship and ability to place G$ 3gun trigger in with a DFCO grip and the enlarged controls that come on this lower. To me this is a must have enhancement for anyone with a stribog 45acp or 10mm. Also the new GO mags and authentic HK mags run flawlessly in this lower and release easily.

So I didn't even want one of these. I was perfectly happy with the OEM one, with the exception of how a Geissele SD3G didn't feel right in the OEM lower. Managed to snag one when the March drop released. Now the SD3G feels like it should. That to me was worth the coin spent on this lower. It does rattle quite a bit though. I tried the included tensioner screw, but it didn't make a difference at all. But it isn't even a thing, really. It won't affect function and I have AR's that are worse.

The quality itself is good despite a quite few things that it will need to be run. First the roll pins for trigger group area a little over bored needing anti walk pins, no matter how many trigger groups I tried (3) second the take down pins to put lower and upper together have the same problem but just the front one ( they’re over bored and the rear one was fine, 3rd the instructions don’t mention anything about what the screw with a green tip purpose is there goes in the area right my grip screw and comes out in tip half of receiver does. Other than that it’s pretty good.

Great Lower!

Great product. Excellent build quality and fitment