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| An AK Builder Taiwan Sidefolder |
There is an ever growing variety of side folding stocks and trunnions available on the market, leading to quite a confusing situation when it comes time to plan your build. This aims to be an overall guide for things to remember when deciding on what stock cut to use.
Not all stocks are created equally. Not all trunnions are created equally. While in theory all 4.5mm or 5.5mm sidefolders should be the same, the quality and actual specs can vary drastically. In particular, the location and dimensions of the holes for the latch and latch button changes between makes, even if they may appear identical.
Additionally, the actual folding stock itself may not work with different folding stock trunnions - they may not fit another make of trunnion, or the latch holes cut for the other trunnion's stock will be wrong and it will not latch properly. The different pin sizes are obviously also an issue - a 4.5mm trunnion needs a 4.5mm stock and vise versa.
These are the side folding stocks we support via our stock cuts:
- Russian 4.5mm - The original triangular sidefolder stock.
- Bulgarian 4.5mm (Applies to Bulgarian surplus and OLDER Arsenal production only)
- AKB Taiwan (AK Builder) 4.5mm
The stock cut for all of the above is our "Bulg-Russ-AKB Taiwan Sidefolder 4.5mm pin" option.
- Commercial Bulgarian 4.5mm - Modern commercial production, unique specs
- Commercial Bulgarian 5.5mm - Modern commercial production, unique specs
These includes FIME group, and the current Arsenal from Bulgaria from what we have seen.
The above are referred to as the Magnolia International stocks in the options.
- Russian AK-100 series (AK-103, 105, etc) - Modern military, all use the same AK-100 5.5mm stock cut. (Also 74M)
- Russian AK-12/AK-15 - Modern military with an extra cut for the forend pin
- Hungarian AMD-65 - Completely proprietary design, only used for AMD-65.
- Iron Curtain Customs Galil 47 - Iron Curtain manufactures Galil trunnions for stamped receiver builds. This lets you use surplus Galil folding stocks and this cuts the roll pin hole for the stock.
More makes of sidefolder have been showing up on the market recently, mostly commercial production, with greatly varying specs. We do not guarantee these fit any of our current stock cuts.
Other types of sidefolders exist that do not require special cuts, some that have the latch mechanism hanging off the rear of the receiver, some are military and some are commercial production. Variants of this design also exist that screw onto existing fixed stock trunnions. These all take a normal fixed stock cut.
The biggest takeaway should be these aren't all plug and play, and as for quality - you generally get what you pay for.
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