The GSG 16 modification thread
- Thread starter Danfizz
- Start date
incorrigible
CGN frequent flyer
- Location
- stubble jumper
The ICS cocking tube is tapered internally so the GSG16 charging tube won't fit without modification. I'm currently sourcing a long enough drill bit to see if they can be modified without losing too much material
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The ICS cocking tube is tapered internally so the GSG16 charging tube won't fit without modification. I'm currently sourcing a l9ng enough drill bit to see if they can be modified without losing too much material
do you havta mod the ICS tube to connect to the barrel block?
The ICS cocking tube is tapered internally so the GSG16 charging tube won't fit without modification. I'm currently sourcing a l9ng enough drill bit to see if they can be modified without losing too much material
Dont do the drill bit route!!!
The ICS outer tapers narrower to the front sight. A drill bit will punch through (trust me lol)
The best you can do is take a smaller drill bit and wrap sand paper around it using it to expand the hole by sanding. The GSG522 tube is physically bigger than the ICS for strength.
There is more issues with the ICS as well (barrel may not align with the lower tube as well).
incorrigible
CGN frequent flyer
- Location
- stubble jumper
incorrigible
CGN frequent flyer
- Location
- stubble jumper
So I did some experimentation today and with a lot of modifications the ICS cocking tube can me made to fit. Its interesting in that its almost like they purposefully designed it not to fit
It took about 4 hours of trimming and fitting with hand tools but it can be made to work Before (the bottom one
)...
After installing the modified ICS cocking tube... and shaving the reciever... and making a receiver cap out of a 3D printed sacrificial one bought from a member (fyi - this one was the biggest PITA... someone with skills needs to 3D print the original GSG-5 profile reciever caps modified to fit a shaved GSG-16 reciever
)... and adapting a metal ICS cocking handle to work with a sacrificial alloy ICS one... adding a rotary rear sight and finally shaving the fat off of the mag release. Replacement selector are availible from Numrich.So at the end, in my opinion, it is possible to do a reasonable GSG-5 conversion without having access to a GSG-5/522 conversion kit
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incorrigible
CGN frequent flyer
- Location
- stubble jumper
there was a lot of small adjustments
- the interior was sanded to take the most of the taper out and then reamed with a 5/8" drill bit to make it concentric and even and a final buffing to make for a smooth action.
- the cocking handle slide opening had to be enlarged to accept the larger 1/4" GSG-16 cocking handle
- the barrel opening on both the sight and the cocking tube had to be reamed and lowered a couple mm.
- there was other extraneous material that had to be removed from underneath the tube to make the barrel clear and fit
- the cocking handle screw access port needed to be modified by a few mm to provide access to the mounting screw with the steel cocking tube (its in a slightly different position on the GSG-16
In most cases the adjustments are just enough to make them not "plug and play". Adjustments are minor and don't affect the end use which is solid.
I haven't had it out to the range yet... just working on it this afternoon. I mounted the rear sight at the same height as my SD5 which lined up great but I'm assuming there's always some adjustment required.
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MrPlatypus
New member
Stock Barrel HK33(ish) look
Tried to PM you but you inbox is full. Did you make the extended sight/cocking tube? If so I'd happily buy one from you if you would make another
- Location
- Nova Scotia
