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Mak 90 Underfolder Flat With Magwell Dimples

CODE:

B1-41

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MAK 90 UNDERFOLDER FLAT WITH MAGWELL DIMPLES, B1-41

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THIS REQUIRES OUR MODIFIED MAK90 PUNCH TO BEND CORRECTLY. IF YOU USE OUR OLD PUNCH IT WILL RUIN THE FLAT! WE HAD TO MODIFY THE MAK90 PUNCH TO ACCOMADATE THE UNDEDRFOLDER STAMPING ON THESE FLATS. THE NEW PUNCH WE OFFER CAN BE USED ON ALL MAK90 FLATS THAT WE SELL.

How to tell if your Mak90 punch will work with this flat.

All of our flat bending die punches have a serial number on them. If the serial number on your Chinese Mak90 punch is "7310" OR GREATER then you have the proper punch for these flats. If your number is LESS THAN "7310" then you will ruin this flat if you bend it using the punch. The new modified punch must be purchased in order to bend these flats.

This is our MAK90 Under folder Type56-1 Receiver Flat.

Due to the dimensional differences between these and the other flats you will need to use a different punch for our die to bend these. Originally the receivers were made from .057" material and these are made from .050" annealed 4130. If you have already bought the bending die from this website your user account should be activated to see the Chinese MAK90 punch for sale under the bending die category.

The internal dimension for the Chinese MAK90 receivers is 1.225" which is why a new punch will be needed. The other punches we have sold in the past are 1.208 or 1.250.

Currently we do not have the center supports that are narrow enough for these, but you can cut a 1mm center support down in length.

This item is made in the United States and counts as a 922r compliant part.

Chinese MAK90 With Magwell dimples

0.0

CODE:

B4-61

This is our MAK90 flat with top rails machined and mag well dimples. These come with lower bolt guide rails. Due to the dimensional differences between these and the other flats you will need to use our Mak90 punch for the bending die. Originally the receivers were made from .057"...

Receiver Thickness1.27mm

$54⁹⁵

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AK-Builder AK47 7.62 receiver flat, 4130 annealed, in the white, with pre-punched trunnion holes.

AK47 7.62 Flat With Trunnion Holes

0.0

CODE:

B2-61Y

The front and rear trunnion holes on these flats are pre-punched to help with the installation of the trunnions. In some cases the front trunnion rivet holes may not line up do to how the factories drilled the holes in the trunnions. Receiver flat thickness= 1mm...

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Premium Flat OptionsWith Y & I Embossing Receiver Thickness1mm

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AK-Builder AK Rivet Set

0.0

CODE:

A0-61

The new long rear trunnion rivets have a slightly shorter head and the cupped tool that supports the rivets will need to be sanded down to keep the tool from touching the receiver. Be sure to check this before installing the new black rivets. These have the correct swell...

Options:

AKM Fixed Stock AK74 Sidefolder AK74 Fixed Stock AKS Underfolder Yugo M92/M70 1mm Underfolder Yugo M70/M72 Fixed Stock Yugo M70 1.5mm Underfolder Bulgarian RPK 74 Chinese Mak 90 Korean Type 68 Underfolder (More +3)

OptionsAKM Fixed Stock

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Romanian MD63/M65 underfolder receiver flat with bolt guide rails, annealed 4130 steel, pre-drilled holes.

Romanian MD63/M65 Underfolder Flat

0.0

CODE:

B2-21Y

These are made to work with the Romanian underfolder stocks and will not work with the Polish or Yugo sets. There is no need to buy a reinforcement plate for this receiver. Trunnion not included. Receiver flat thickness= 1mm (.040") Material...

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Romanian 7.62 RPK 1.5mm receiver flat and matching bolt guide rails, 4130 steel in the white.

Romanian 7.62 RPK Receiver Flat 1.5mm

0.0

CODE:

B4-21

These flats are for the bulged trunnion RPK 47 7.62 parts kits. The flats and rails are made from 4130 and are in the soft annealed condition and need to be heat treated after bending. The RPK flats don't have magwell dimples, but have different bolt guide rails that make up for it....

Receiver Thickness1.5mm

$58⁵⁰

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Angled view of Polish Underfolder 4130 steel flat in the white with bolt guide rails.

Polish Underfolder Flat

0.0

CODE:

B2-51Y

The Polish Underfolder is the most popular underfolder parts kit and this was the first specialty flat that I had perfected by modifying existing flats in 2004. Now they are stamped out specifically for the Polish Underfolder from raw steel. Receiver flat thickness= 1mm (.040")...

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With Y & I Embossing

Premium Flat OptionsWith Y & I Embossing Receiver Thickness1mm

$59⁹⁵

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