View Full Version : G21 gen3 PDW

11-12-2017, 05:42 AM
Just add the PDW and safety to one of my 21's. I have to say the advice here is spot on.

Next step is to scrape together the scratch for the rmr. I would like to send the slide out to be milled and have it np3 coated. Another option would be to mill the slide in house and say screw the coating for now. There's gun money in the budget but would like to use some of it for training.


11-23-2017, 04:44 PM
that s ounds like a nice setup! going to run it suppressed?

11-27-2017, 07:46 PM
I have a Gen3 M21SF,sure would like to see some pics of yours.

11-27-2017, 08:41 PM
You'll want a Suarez trigger too.

Blacked out
11-28-2017, 03:59 AM
You'll want a Suarez trigger too.
This. Besides the rmr, the flat and straight Suarez trigger is easily my favorite upgrade.

11-28-2017, 04:51 AM
Dollars for doughnuts, sending the slide to SI for the milling/ finishing is the best option. At the time I sent mine in (a few years back) I talked to a well respected local gunsmith before hand. He's a good friend with more experience than I have so I often consult him before I spend money. The long and short of it is that SI has done the job many times and is set up to do it and has a track record of doing it well. They don't charge much for the job either. Without looking it up as I'm posting, milling finishing and putting the right sights on is cheaper here than you will find elsewhere. Milling yourself is an option, but as you know the first time you do anything there is a greater possibility of a learning error than you might like. It's really a good deal to just pay to get it done right by a shop that does it all the time.

I hate to sound all fanboy-ish, but that was what I concluded when I was getting into the optic enhanced pistol.

CR Williams
11-28-2017, 06:20 AM

11-28-2017, 03:03 PM
That is a good looking setup. What type of magazine is that ?

Brent Yamamoto
11-28-2017, 03:12 PM
Those are Kriss mags.

11-28-2017, 03:46 PM
If you have a G21 Kriss mags are another “must have”.

11-28-2017, 07:41 PM
I live in Ma. and that made the decision to build a 21 over a 17. If I can't have more I may as well have bigger. Jumped on the SI semi flat trigger shoes and maritime spring cups. Goes without saying a great quality product. Yes I absolutely agree sending the slide out would be the best option. Would probably want to lower the ejection port too. Have a couple other places to spend money before slide work. Ma. so no go for a suppressor and Kris Vector mags. (Full disclosure, Pre 98 hi caps are legal with proper licensing which I have.)

G19 build next. Hope to order complete SI side this week.

CR Williams That is sharp!

12-10-2017, 10:40 AM
I was wondering if .40 cal glocks were ok for PDW and since some are using G21s in .45 ACP I assume it is.

Brent Yamamoto
12-10-2017, 12:28 PM
If you carry a 40 Cal pistol it would be wise to have a 40 PDW.