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Shotgun Picatinny Rail Vent Rib Scope Mount for IZH-27,MR-153/155, MP-233, TOZ-120, MTs21-12, TOZ-84 carbine

Shotgun Picatinny Rail Vent Rib Scope Mount for IZH-27,MR-153/155, MP-233, TOZ-120, MTs21-12, TOZ-84 carbine

Regular price $9.90 USD
Regular price $12.50 USD Sale price $9.90 USD
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Note: We have added 2 sets of screws of different lengths to this Vent Rib Mount Adapter to fit for more models. The additional screws are only limited to new orders shipped from China currently.

  1. Fit For: IZH-27,MR-153/155, MP-233, TOZ-120, MTs21-12, TOZ-84 carbine,  NOT fit for TOZ-34.
  2. This Ventilated Rib Picatinny Rail is designed to work with Shotgun Ventilated Rib (no wider than 7.9mm).
  3. The length of the picatinny rail is 55mm/85mm, which is long enough to fit most scopes and accessories.
  4. Do not over tighten the screws, stop tightening when resistance is felt.
  • Type: Vent Rib Mount Adapter
  • For: Shotgun
  • Rail: Picatinny Rail
  • Length: 55mm / 85mm
  • Screw length: 0.365"
  • Pins length: 0.31"
  • Wide: Ribs up to 7.9 mm wide
  • Net Weighs: 15g / 22 g
  • Material: High quality aluminum


Installing the Vent Rib Mount Adapter does not require any firearm building, you can take it out of the box and install it on your gun in minutes. These rails attach as low as possible on the ribs for a slim profile that provides minimal interference with your weapon build.

The principle of installation consists in transverse blades that pass through the holes in the ventilated plate and are attracted by two screws. On the sides of the transition bar has 2 pins, providing additional fixation.

Make sure to use loc tite on screw, do not over tighten the screws, stop tightening when resistance is felt.

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Customer Reviews

Based on 35 reviews
David P.
Screws are to long

Will only fit. 310 vent rib.
The screws are to long they touch the barrel. I had to cut them shorter. After hunting season is over I'll find the proper length screws. For another 10 bucks you could include different length screws and lock tite. You would have better reviews and more stars. It does work as it should.

Gary G.
ohhunt picantinny rail

The quality of the set screws was so bad they just stripped easily. Also the 4 set screws that hold the two plates in place were too long and hit the barrel so they could not be tightened.

Stuart H.

ohhunt® Ventilated Shotgun Rib Mount Picatinny Rail - 3.35 inch 8 Slot

Orville J.
RIB rail Base

The 4 screws that hold the base on the rail afe too long for my Remington 870. They have to be cut off in order to put the sight on. I haven"t had a chance to try it out yet.

12 ga beretta

Works great on rib of my beretta shotgun. Make sure to use loc tite on screws. Do not over tighten especially side screws. Stop tightening when resistance is felt. Have a red dot on shotgun for wing hunting. Have shot over 200 rounds so problems!! Also, mounting screws do not touch barrel on my shotgun.

William C.
Browning pump 10gage

Installed in 20 min after relocating a few times
Solid and looks good

Teodor S.
Shotgun Ventilated Rib Mount Adapter Picatinny Rail - 5 Slot 2.16 inch


Bryan L.
Only for normal width ribs

Works as it is intended to. But it’s not for all shotguns. The slot that accepts the actual rib of the shotgun is not wide enough for some shotguns that have exceptionally wide ribs. Check before purchasing.

No problems

People that complained about the mount and screws might be over torquing
them. Putting this mount on your shotgun isn't like working on your car.
The screws can be put in snug enough to do their job, without striping them out.

Samuel M.

I would buy it again. Universal may be a loose term. Every gun may vary... the hardware stripped out easily