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AK-Builder Flat

The front of the receiver is trimmed out far enough to allow the trunnion to just slide in without trimming unlike the other flats that are on the market.  Theirs are stamped and need the flange to be a certain length to be bent.  My top rails are CNC machined to look like the original receivers.

Top Rail Fit


M70 Underfolder Trunnion Shims - Set of 2

CODE: G6-11

$9.95
Trunnion shim for fitting a Yugo M70 rear trunnion into an M92/M70 flat trunnion receiver. Made from .025" thick steel and comes in pairs to shim each side... More
46 item(s)

Polish Underfolder Flat

CODE: B2-51

$35.00
The Polish Underfolder is the most popular underfolder parts kit and this was the first specialty flat that I had perfected by modifying... More
39 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

2XTM Receiver Flat - Top Rail Bent, Stepped and Trimmed

CODE: B2-11

$35.00
These flats have the opening cut using the dimensions on the 2XTM instructions. The rails that come with the flat will be the standard rails and will have... More
11 item(s)

AK47 7.62 Flat With Trunnion Holes

CODE: B2-61

$24.95
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... More
25 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

M92 Underfolder Trunnion Flat

CODE: B1-31

$35.00
This flat will work with the M92 or M70 that has the flat sided front trunnion . These will NOT WORK with the bulged RPK style trunnions.... More
30 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

Underfolder Reinforcement Plate

CODE: A2-41

$10.00
This is a new design that matches the original plates.  Orders shipped after 9/5/2015 will have the newer design. These are not needed on the Yugo's... More
48 item(s)

Standard AK47 Fixed Stock 7.62 Flat

CODE: B1-71

$24.95
Now available with Y & I embossing! These flats can be used for about any 1mm thick 7.62 receiver.  Without the trunnion holes you can... More
23 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

AK74 5.45x39 Fixed Stock Receiver Flat

CODE: B2-41

Out-of-stock
$28.95   $24.95
-14%
This flat has the magwell and mag dimples to match the 5.45 magazines which are narrower then 7.62 mags.  There are no front or rear trunnion holes.... More
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

Hungarian AMD 65 Receiver Flat

CODE: B1-61

$35.00
These are the correct flats for the AMD-65 parts kits with the sidefolding stock.  These do not need the sidefolder reinforcement plate.  The... More
12 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

Bulgarian Sidefolder AK74SU 5.45 Flat

CODE: B1-21

$37.50   $35.00
-7%
This flat was made for the Bulgarian style sidefolding triangle or polymer stock.  The magwell and magwell dimples are made to fit 5.45... More
26 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

Hungarian AMMS AK63 Underfolder Flat

CODE: B1-51

$35.00
THESE DO NOT HAVE ALIGNMENT HOLES IN THEM ANYMORE The AMMS trunnions I have seen are machined unlike the Polish which are stamped and welded... More
44 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

New Sidefolder Reinforcement Plate

CODE: B6-41

$10.00
NEW DESIGN as of 8/13/2015 PICTURE SHOWS THEM AS BLACK OXIDE FINISH, BUT THESE WILL BE IN THE WHITE WITH NO FINISH. The new plates have... More
60 item(s)

Polish Tantal Flat

CODE: B1-11Y

$40.00
This flat is specifially made for the Polish Tantal to work with the left side selector and right side safety.  The hole for the selector/safety is a... More
7 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

Romanian MD63/M65 Underfolder Flat

CODE: B2-21

$35.00
  These are made to work with the Romanian underfolder stocks and will not work with the Polish or Yugo sets.  There is no need... More
20 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

7.62 Sidefolder Khyber Pass Flat - Top Rail Bent and Trimmed

CODE: B2-31

$37.50   $35.00
-7%
T h is flat is for using a Bulgarian style rear sidefolding stock/trunnion to make the so called "Khyber Pass" AK's in 7.62x39. Receiver flat... More
47 item(s)
  • Without Y & I Embossing 
  • With Y & I Embossing (+$5.00)

1.5mm Center Support and Rivet

CODE: C8-51

$7.00
These are made from heat treated 4130 steel and the rivets are a copy of an original AK center support rivet. The length is shorter than the 1mm center... More
290 item(s)

AK47 1.5mm Extreme Duty Receiver Flat

CODE: B4-31

Out-of-stock
$29.95
This is the receiver flat everybody has been wanting.  Made from 1.5mm thick 4130 to be used with modified 1mm parts kits. The top rails are... More
  • Normal 
  • Scratched (-$5.00)

Romanian 7.62 RPK Receiver Flat 1.5mm

CODE: B4-21

Out-of-stock
$38.50
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... More

Bulgarian 74 5.45 RPK Receiver Flat 1.5mm

CODE: B4-11

$37.50
These flats are for the bulged trunnion RPK 74 Bulgarian kits.  The flats and rails are made from 4130 and are in the soft annealed condition and need... More
11 item(s)

MAK90 Receiver Flat

CODE: B5-31

$29.95
This is our MAK90 flat without trunnion holes with the top rails machined.  Due to the dimensional differences between these and the other flats you... More
37 item(s)