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Summary[]

The MP4/45 series of submachine guns and pistols are based on the AR-15 platform. Chambered in .45 ACP, it is designed for close quarters stopping power at mind. The M4/45p is the civilian pistol version, essentially being identical to the MP4/45 but outfiitted with a pistol brace and having a semi-auto-only trigger group.

MP4/45[]

The MP4/45 was developed in early 2020 by Lumen Arms as a competitor to the HK UMP. Interchangeable with the AR-15 pattern rifles in terms of hand guard and gas block, and you can basically use anything as a stock if you manage to attach it on to the gun.

MP4/45k (Short SMG)[]


The MP4/45k is the compact/short version of the MP4/45, outfitted with a shorter barrel, modified gas system, MP5K-pattern front grip and a collapsible stock with adjustable cheek plate.

M4/45P (Pistol)[]


The M4/45p is the civilian pistol version, essentially being identical to the MP4/45 but outfiitted with a pistol brace and having a semi-auto-only trigger group.

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