The Russian Konstruktorskoe Buro Priborostroeniya (KBP) Instrument Design Bureau created its own folding submachine gun, which shares a resemblance to the ARES FMG. Similarly designed for close-quarters combat, it was intended for use by Special Operations teams with the Ministry of the Interior of the Russian Federation (MVD).
Unlike other folding guns, the PP-90 chambers the 9 x 18 mm Makarov cartridge. When collapsed, the pistol grip and magazine are folded under the barrel and covered by the stock; it folds into a rectangular box without protrusions, making its concealment all the more easier. Folding down to around 11 inches, it can be easily carried in a holster, bag or shoulder rig.
The barrel’s muzzle can be fitted with a suppressor, and, unlike other folding guns that omit sights for the sake of compactness, the PP-90 uses a flip-up iron sight capable of folding down into the receiver.
The PP-90 also uses a manual safety/fire selector switch. On the side of the receiver, a safety toggle provides two settings: "P" (safe) and "O" (automatic). By selecting the safety setting, the weapon mechanically disables the bolt catch. It's also designed to prevent accidental discharges, making it impossible for the gun to fire when in a folded position. On top of this, it's incapable of firing until the stock is fully extended.
So this will be more inspired by the PP90 than a copy. I will be using a KelTec Gen 3 Sub2000. I paid about $389 for a new KelTec Sub2000 Gen 3. KelTec doesn't receive much love, mainly because of their use of plastics to keep costs down. But their engineering and design are inspired and top notch. The sub2000 is fascinating. It is very compact and reliable. The first generations weren't able to accept an optic and fold. The KelTec engineers came up with an elegant solution. The forend rotates to allow the optic to move out of the way to fold.
Integrally suppressed KelTec sub2000 Gen3
So the major changes to this will be removing all the plastic from the working parts and replacing it with steel or aluminum. I will probably keep the barrel folding to the top but will make the grip, mag, and trigger assembly a folding unit. I will remove the buttstock and probably redesign the charging handle. I was going to SBR it on a form 1 but think I will just keep it with a 16" barrel, it will only be slightly larger than the PP-90. I will also implement some design changes from the ARES FMG and Magpul FMG-9
ARES FMG
Magpul FMG-9
Integrally suppressed KelTec Sub2000 CQB
Unlike other folding guns, the PP-90 chambers the 9 x 18 mm Makarov cartridge. When collapsed, the pistol grip and magazine are folded under the barrel and covered by the stock; it folds into a rectangular box without protrusions, making its concealment all the more easier. Folding down to around 11 inches, it can be easily carried in a holster, bag or shoulder rig.
The barrel’s muzzle can be fitted with a suppressor, and, unlike other folding guns that omit sights for the sake of compactness, the PP-90 uses a flip-up iron sight capable of folding down into the receiver.
The PP-90 also uses a manual safety/fire selector switch. On the side of the receiver, a safety toggle provides two settings: "P" (safe) and "O" (automatic). By selecting the safety setting, the weapon mechanically disables the bolt catch. It's also designed to prevent accidental discharges, making it impossible for the gun to fire when in a folded position. On top of this, it's incapable of firing until the stock is fully extended.
So this will be more inspired by the PP90 than a copy. I will be using a KelTec Gen 3 Sub2000. I paid about $389 for a new KelTec Sub2000 Gen 3. KelTec doesn't receive much love, mainly because of their use of plastics to keep costs down. But their engineering and design are inspired and top notch. The sub2000 is fascinating. It is very compact and reliable. The first generations weren't able to accept an optic and fold. The KelTec engineers came up with an elegant solution. The forend rotates to allow the optic to move out of the way to fold.
Integrally suppressed KelTec sub2000 Gen3
So the major changes to this will be removing all the plastic from the working parts and replacing it with steel or aluminum. I will probably keep the barrel folding to the top but will make the grip, mag, and trigger assembly a folding unit. I will remove the buttstock and probably redesign the charging handle. I was going to SBR it on a form 1 but think I will just keep it with a 16" barrel, it will only be slightly larger than the PP-90. I will also implement some design changes from the ARES FMG and Magpul FMG-9
ARES FMG
Magpul FMG-9
Integrally suppressed KelTec Sub2000 CQB
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