The best way to determine what model KNS Precision Adjustable Gas Piston System fits your PSA AK 105 is to measure your current system and compare it to the chart of the left side of the product page in the product images.
The MOST accurate way to ensure correct fitment of the piston to your gun is for you to measure your working length & hole distance and compare it against the chart on the product page.
The MOST accurate way to ensure correct fitment of the piston to your gun is for you to measure your working length & hole distance and compare it against the chart on the product page.
I unfortunately don't have that answer for you, and it isn't a part specifically made by KNS. If you take the time to disassemble your Zastava M72 and take the measurements as KNS suggests, it should get you an answer on the correct system that you would need.
Use this manual and fit information from KNS Precision to decide which option would be best for you (Page 12 & 13 of the PDF):
https://www.knsprecisioninc.com/wp-content/uploads/2018/05/Adjustable-Gas-Piston-User-Manual-V3.pdf
It may, but you will need to verify specifics regarding your firearm and the fitment information provided by KNS. Please use this manual and fit information to decide which option would be best for you:
https://www.knsprecisioninc.com/wp-content/uploads/2018/05/Adjustable-Gas-Piston-User-Manual-V3.pdf
FIT NOTES:
"The MOST accurate way to ensure correct fitment of our piston to YOUR gun is for YOU to measure your working length & hole distance and compare it against our chart.
**When selecting your piston please refer to the chart pictured above to ensure maximized compatibility with your firearm.**
***A small percentage of Commercial Spec firearms have the piston welded to the carrier, instead of the usual Rivet holding in the Piston. We recommend purchasing a new carrier for the easiest installation.***
**** Vepr and Saiga Pistons will require drilling through the op-rod after screwing the piston into the carrier, due to variations in the staking location. These Op-Rods are Phosphated instead of Nitrided to allow easy drilling.****"
It may, but you will need to verify specifics regarding your firearm and the fitment information provided by KNS. Please use this manual and fit information to decide which option would be best for you:
https://www.knsprecisioninc.com/wp-content/uploads/2018/05/Adjustable-Gas-Piston-User-Manual-V3.pdf
FIT NOTES:
"The MOST accurate way to ensure correct fitment of our piston to YOUR gun is for YOU to measure your working length & hole distance and compare it against our chart.
**When selecting your piston please refer to the chart pictured above to ensure maximized compatibility with your firearm.**
***A small percentage of Commercial Spec firearms have the piston welded to the carrier, instead of the usual Rivet holding in the Piston. We recommend purchasing a new carrier for the easiest installation.***
**** Vepr and Saiga Pistons will require drilling through the op-rod after screwing the piston into the carrier, due to variations in the staking location. These Op-Rods are Phosphated instead of Nitrided to allow easy drilling.****"
The MOST accurate way to ensure correct fitment of the piston to your gun is for you to measure your working length & hole distance and compare it against the chart on the product page.
This is currently the only models of the KNS Precision Adjustable Gas Piston System available. Please email us at techsales@opticsplanet.com regarding your question.
You will need to measure your current Gas Piston System and then compare it to the chart on the left side of the product page to determine what KNS Precision Adjustable Gas Piston System you will need. On the left side of the product page under the product images there is a file with instructions on how to do this.
You will need to measure your current Gas Piston System and then compare it to the chart on the left side of the product page to determine what KNS Precision Adjustable Gas Piston System you will need. On the left side of the product page under the product images there is a file with instructions on how to do this.