SP10 & SP45 Stribog UMP Lower

Description
24 Reviews

The SP10 & SP45 Stribog UMP Lower uses UMP style Magazines as well as AR-15 trigger groups, grips and safety selectors. The lower comes with an internal ambidextrous bolt catch and billet aluminum magazine release. This lower is compatible with the SP10A3 and SP45A3.

***This lower is not a firearm and does NOT need to be shipped to an FFL***

Features:

- Internal bolt catch design with ambi controls.

- Flared magwell for easier magazine insertion.

- 6061 Billet aluminum magazine release.

- AR15 safety selecter spring and detent included.

- Compatiable with most AR trigger groups and grips.

- Lower is Made from billet 6061 aluminium.

- Lowers are hard coat anodized.

- Weight = 10.4oz

Additional Parts Needed:

- AR15 Trigger Group

- AR15 Safety

- AR15 Pistol Grip

Disclaimer: Lingle Industries is not affiliated with Grand Power or Global Ordnance. The use of "Grand Power" or "Global Ordnance" is for advertising of aftermakert products for Grand Power platforms only.

24 Reviews Hide Reviews Show Reviews

4
SP45A3 lower

Posted by JL on Mar 13th 2026

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.
4
Stribog 45

Posted by Matthew Raffai on Mar 11th 2026

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.
5
SP45 Lower

Posted by John Ross Yeomans on Dec 3rd 2025

Great Lower!
5
Lingle SP45 UMP Lower

Posted by Byron Witty on Nov 26th 2025

Great product. Excellent build quality and fitment
5
L .45 ump lower

Posted by HughR on Jul 8th 2025

Awesome fit and finish. Just a little pricey....
5
Amazing Lower - Massive Upgrade

Posted by Kevin Bisson on Jun 25th 2025

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!!!
5
Sp45 Stribog UMP Lower

Posted by Cesar on Jun 24th 2025

Outstanding for and finish. Makes the controls manipulation much more familiar and easy. Absolutely excited to finally have this part!
5
SP10 lower

Posted by Mark Alexander on Jun 22nd 2025

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.
5
10 MM Stribog lower

Posted by Bear on Jun 7th 2025

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