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Magazine Extension Tube for MP-153/MP-155 on 4 cartridges 12 gauge

Internal code: 6509
Are available
Only 1 left in stock
2,300 Р To order   items
Approx. 33 USD

The main purpose of the store extension for Mr-153/155 for 4 rounds (Delta-Tech)

Extension cable shop for MP-153 for 4 rounds (Delta Tech) is used when you want to increase your own capacity under-barrel tubular magazine pump-action rifle. After its installation, you can equip a weapon 8 ammo caliber 12х70мм. For smooth and uniform flow meets the spring is of greater length and increased stiffness (included, installed instead of the factory spring). The whole process of installation of UPM (the extension tube barrel store) is very simple: the extension is screwed onto the seat tube of the store on the weapon for easy tightening by hand to the surface extension caused the notch. You can also install a detachable sling swivel for fixing the gun strap. For safe operation, the manufacturer recommends to further strengthen UPM to the trunk, which has a special groove (clamp sold separately).

The extension barrel, a store can be installed on various modifications of domestic rifles, MP-133, MP-153, LL-154, LL-155, Remington SPR-453"Spartan", MC 21-12, Remington 1100/1187, Benelli M4. The product is made of aviation aluminum alloy that combines strength, corrosion resistance and lightness – light weight does not weigh down the weapon and makes it comfortable to use for long periods of time. If you have any questions on the purpose, installation arms, order and purchase of the extender barrel, shop Mr-4 (Delta-Tech), you can contact managers of our online store by phone (495) 989-10-56. All questions can be asked directly on the site, it is enough to fill a small and convenient form.


Before beginning any work on a firearm be sure to check that the weapon is completely unloaded and the safety is on! When installing and removing the extension tube barrel store (UPM) needs to ensure no ammunition in the weapon. The amount of ammunition in the weapon on "Law on weapons" of the Russian Federation shall not exceed 10 ammunition (except sporting events).

Package includes:

  • Tube extension barrel, shop No. 4 – 1 PC.
  • Spring – 1 PC.
  • Washer – 1 PC.
  • Sling swivel – 1 EA.
  • Screw for strap clips – 1 EA.
  • Cover – 1 piece
  • Packaging

Technical characteristics of extension store (4 rounds) for Mr-153/155 (Delta-Tech)

Technical data

Extension cable shop for 4 rounds for Mr-153/155

Fastening on the weapon

Removable: screw, nut instead of a regular store


4 rounds



Designed for weapons

Mr-153, Mr-133, LL-154, LL-155, MC 21-12, the Remington SPR-453"Spartan", Remington 1100/1187, Benelli M4

Physical and operational characteristics


Aluminum alloy В95Т, polymer coating


Matte black

Length, mm


Weight, kg



OOO "Delta-Tek", Tula, Russia

Case material
aluminum alloy
Country of origin
Manufacturer's warranty (years)
Package dimensions, place 1 (mm)
500 × 65 × 55
Net weight (kg)
Gross weight 1 (kg)