Toybox

A local club member sold his Glock 21 some time back, but he still had quite a few accessories for it. Long story short, we cut a deal...

Since the Glock 20 and Glock 21 use the same polymer frame, the top ends and magazines are interchangeable. Consequently, one can have a 45 or a 10mm just by changing out the top end and magazines. By extension, they could also shoot whatever conversion barrels are available for either upper.

My friend had a stock Glock 20 slide and barrel with a nice Burris Fast Fire III sight installed, and a Lone Wolf stainless steel long slide 45 Auto with a compensator and ghost ring sights. There were also five 10mm magazines, aluminum magazine baseplates, two holsters and two mag pouches.

Here is my frame with each slide installed. Using a flashlight to prop the pistol up. Sorry for the dim lighting.

Add caption

I have not yet fired either, and to fire the 45, I will need to procure magazines.

As they currently are, neither is IDPA legal. Both specific sights and the compensator are excluded.

My plan, however, is to swap the sights between my Glock 20C and this Clock 20 slide. My TruGlo TFO sights on the non-compensated slide and stock 10mm barrel may allow me to classify and shoot SSP with that pistol (although the extended slide release may be excluded) and ESP with the 40S&W conversion barrel. 

The 45 may or may not be too long even without the compensator installed :)