I started off with a basic Wingmaster. This is the before picture.

I was lucky enough to sell off the stock, forend and barrel, and put those funds toward the replacement parts. I effectively turned it into a Police. Here is what I replaced, with factory part numbers and Brownell’s part numbers for reference:
18-1/2" Parkerized barrel F242243 767-000-385WB
Sear spring, heavy police F97642 767-000-716WB
Carrier dog follower spring F17415 767-174-150WB
Extractor, non-MIM F16176 767-161-760WB
Safety VCS 100-000-569WB
2 round mag extension with follower 100-003-056WB
Stock set 100-011-223WB
Sling mount MAG507 100-009-581WB
L3 MOE rail MAG407BLK 100-005-601WB
Light mount MAG614BLK 100-015-677WB
The Vang 2 round mag extension comes with the follower, spring and sling attachment. Good deal as a set.
Here’s the after pictures:



One problem I ran into was that light mount does not fit on that light rail. It doesn’t say that on the Magpul or Brownell’s web sites, as far as I saw. It will only work with a scout or other offset mount. Fortunately, I had a light mount that I had lying around for another project, but it fits perfectly on this set up.
The light is a modified G2 with this drop in http://www.malkoffdevices.com/drop-in-m ... nd-malkoff
It is friggin' bright. There's no need for a clicky with that mod because once it's on, you've destroyed all night vision. I've got the light in just the right place that I can hit the temporary on button, and even twist the tailcap with my thumb if need be.
I was originally thinking of painting it, which is why I got the FDE so I would already have the base coat on them. I found with the Magpul stock, if I left the LOP as short as it would go (about 2" short of normal for me), it would make an excellent house gun. No need to paint it, and I really don’t care about the mismatch colors.
I have a barrel/magazine clamp, not sure if I’ll need it.
Because I didn’t know what type of sling set-up I was going to end up with, there are three different connection points for 1 or 2 point set-ups.
I did a mock clear of the house last night with all the lights off. Everything functioned great. I like the light position. Hopefully get to the range this weekend.
Here are parts I considered, but did not use, either because I used alternative parts, or chose to go a different direction:
2 round mag extension A5102305 019-000-047WB
Trigger Assembly F102203 767-000-501WB
Magazine spring, police F92447 767-000-379WB
Follower 100-002-463WB
Detachable side ammo carrier DSACREM 100-005-245WB
Forward sling mount MAG508 100-010-976WB
Sling Swivel MAG540 100-013-937WB
Barrel and 2 round mag extension 100-014-061WB
18" barrel cylinder bore bead sight 24620 767-000-957WB