How to disassemble the retractable stock.
Place the butt stock
between your knees with the recoil spring assy pointing
away from you, and push the circlip off using two
screwdrivers if it is the "C"-type circlip (6). If it is a
snap ring you simply use the snap ring pliers. In stead of
placing it between your knees you could place the stock in
a vice but I don't recommend this as it would be easy to
damage the stock.
removing the circlip (6) remove the locking ring with
spring (5) and the clamping lever (4).
protective cover (3) from the back plate (1) by pressing
the tabs in with a pair of pliers and pulling the
Now you can
slide the butt stock (7) with the protective cover (3) and
the gripping lever (2) off from the back plate (1).
gripping lever from the guide rails might be a little
tricky, place the gripping lever in the guide rail
locking recesses used to lock the stock in the extended
position. Then wiggle it a little while carefully bending
the guide rails very slightly apart, and the gripping
lever should slide off.
How to assemble the retractable stock.
protective cover (3) onto butt stock (7).
gripping lever (2) in the recesses and push butt stock to
half length into the back plate (1).
protective cover (3) into the back plate (1).
clamping lever (4) to the buffer housing so that the two
lugs engage properly in the gripping lever (2).
locking ring with spring (5) so that the end of the
tension spring engages in the bore of the locking ring
circlip (6) or snap ring(6).
Pre-tensioning the spring in the clamping lever.
stock all the way up to stop.
clamping lever to the left.
clamping lever all the way to the stop.
ratchet into the notch of the locking ring and swiwel back
process until the clamping lever is under spring tension.
Locking ring with spring (5), detailed view.
that there are some types of stock that might disassemble in
a slightly different way, but I think the basic principle
is the same. Examples are the HK33/93/94/MP5 stock. I
haven't tried to disassemble any of these yet.
If you assemble your retractable butt stock
incorrectly it might collapse on you while shooting,
causing severe injury.
you choose to proceed, you do this on your own risk, and
if you somehow manages to break or otherwise ruin your
stock, well that is your problem. If you are not 100% sure
that you can manage to do this, don't do it, or pay
someone competent to do it for you.