Jim,
I am contemplating purchasing the Glock 21 (.45 ACP). I am concerned that it is not a fully supported chamber, should this be a worry with the low pressure round like the .45 or is it just a factor in the higher pressure round like the .40 caliber. I have larger hands and the grip is not a problem for me. I hear that you can get a replacement barrel that fully supports the round, would you recommend this. Thanks for any help with this matter,
JWR Replies: The Glock 21 is a good choice, especially after adding tritium sights and having a grip reduction done. There are three good reasons to get an aftermarket barrel: 1.) They have traditional rifling, which is less prone to fouling than the polygonal rifling on the Austrian made originals, 2.) As you mentioned, they have a more fully supported chamber, and 3.) It leaves your original barrel available to use as a spare.
My advice: Proceed with your Glock 21 purchase, preferably from a private party at a gun show. Or you can find in-state private party sellers by searching “by state” at www.GunsAmerica.com [1]. Once you have it in hand, have Trijicon or Meprolight tritium sights installed, and send the frame to ArizonaResponseSystems.com for a grip reduction. (Or buy the Glock’s new M21-SF variant, that comes from the factory with a reduced, M1911 contour grip.) Replacement barrels and critical spare parts are available from Lone Wolf Distributors [2] or Glockmeister [3]. As previously mentioned, the best source for extra magazines is probably Natchez Shooters Supply [4]. Buy at least 8 or 9 spares!