SP10 & SP45 Stribog UMP Lower

Awesome fit and finish. Just a little pricey....

I heard a lot of talk about how great these lowers were. Recently got the SP45A3 in 45ACP and when they came back in stock I decided to give it a go and man am I thrilled that I did. Its a huge upgrade to the stock lower. I went Radian safety, triggertech trigger, and DFCO Kung Fu grip and its a perfect package. Large bolt release is a huge upgrade and the ambi bolt hold open by the trigger guards is great. Extended mag release is excellent as well. The ability to choose your trigger, safety and grip is well worth the price. Makes the entire gun feel solid and substantial. 10/10 recommend!!!

Outstanding for and finish. Makes the controls manipulation much more familiar and easy. Absolutely excited to finally have this part!

I received my lower and built it up with a CMT trigger, Battle Arms safety and Magpul grip. I have built a decent number of AR15 lowers and the Lingle SP10 had a better fit and finish than most of them. The SP10 lower has excellent fit and finish and it built out perfectly.

Outstanding upgrade for gun. Bolt release alone makes it worthwhile. Did I mention the lower is not plastic ......

Excellent quality. Great finish and fit Expected no less

The plastic lower from the factory was an insult to this fine weapon. Got this Lingle aluminum one and everything is better. Any AR grip, any AR safety and any AR trigger group without having to shim it in that plastic POS. The plastic grip especially was way to small. The only thing you need is the pins. Just give them a tap with a punch and they pop right out the plastic one and reverse to install in the Lingle. I used a CMC 3.5 LB Flat trigger and a Rock River Arms Star safety. The detent is very positive with audible and felt clicks on and off, perfect. The mag has a lot less wiggle in the Lingle, it was sloppy in the plastic lower. Additionally the mag release button has a much stiffer spring. The factory mag release spring was WAY too weak. I would have liked to have the push button mag release as well but whatever...you do have multiple bolt release options. It looks great, fits tight, didn't need the tension screw at all. There is no downside to this lower, it's WORLDS better than factory. Buy it.

This thing is the shiznit! Customer service is the best I’ve experienced from any manufacturer too. Will be purchasing from again here soon.

Really great product. Runs flawlessly. It’s awesome that I can run the same grip, safety selector, and trigger as my ARs. I’m big on standardization of firearm controls if it’s possible.