Custom

[chplnstone]

after doing a number of small k-conversions with pirate pgp's, i decided to take on a full-blown changeover of a p68sc for trade to optical2. to accomplish this, i decided to drill out the nutsert (old style internals) and replace it with a 'waffled' 1/4-20 bolt and rod coupling system like on a true k-series...in doing so, i realized that it would be a simple matter to make the body convertable, easily swapping back and forth from k- to p- series by replacing the nutsert with a 'nutsert ring'. a few p68sc's ive had have had a steel ring in front of the valve assembly, drilled and tapped for 8-32, they sit around the neck of the 12ie and act as the nutsert in similar fashion to the top section of a cartridge valve...the stock nutsert sits in a 1/4" hole, removing it allows you to either a 'waffled' 1/4-20 for a k-series or a nutsert 'ring' for a p-frame (or sergi)here we have a pmi1 above the mpk (modified p- to k-) above a kp showing the mounting hole spacing, also in the pic is a nutsert 'ring'

and here a pic with stocks nearby for scale

and one with stocks on for comparison, note the shorter stock foregrip to compensate for the shorter valve tube

also note that the body still has to have the other mods usually associated to such a conversion, such as the cross-pin holes and longer trigger/sear or modified hammer as in this old pirate pgp pic:

im thinking of having a local machine shop produce more of these nutsert 'rings' for others who might want to do their own 'mpk', any thoughts/interest? just thought id share the idea

[noxx55]

PMed you regarding this.

[idkfa]

I am thinking of doing a similar P68-SC conversion (mentioned in previous messages), and I would be interested in this.

[Al Ray]

I dont think you would need to have the nutsert ring made, i think you can order those as oversized shaft collars, just check the set screw threads.

[chplnstone]

DUH! (smacks self in forehead) locking collars! brilliant! thanks al ray, to the hardware store i go...and if i cant find them in the right size, i may just take a drill and a band saw to a standard p-series back block to make one

[chplnstone]

finished p68sc-k (mpk) conversion:

actually finished it and sent it out to optical2 a while back just now getting around to posting a pic

[c6quad]

nice job Ian!!!

[Latoolman]

That's a really looooong feed tube..... Nice Job !!!!

[russc]

wow that's snazzy.

[Helghast]

Very nice! I saw the work first hand that you did on my cousin's (Skippy) KP and it's very impressive!