Privacy guaranteed - Your email is not shared with anyone.

Welcome to Glock Forum at

Why should YOU join our forums?

  • Reason #1
  • Reason #2
  • Reason #3

Site Description

I want a .45 ACP handgun....Glock 21 Gen 4 or M&P 45 full-size?

Discussion in 'General Firearms Forum' started by Airborne Infantryman, Jul 26, 2012.

  1. Airborne Infantryman

    Airborne Infantryman 'Murica!

    Nov 20, 2009
    I've consolidated to only two handgun calibers. 9mm and .45 ACP.

    I want a .45 ACP handgun....Glock 21 Gen 4 or M&P 45 full-size?

    Why? What are your reasons?

    I plan on sending my slide to Mark Housel at L&M Precision, to have the RMR package done, so take that into consideration.

    Pros and Cons of each.

    I've yet to hear of any Gen 4 Glock 21 issues. I don't like the fact that the M&P requires you to take something and push that little lever down inside the magwell. I've heard of issues with rust on the M&Ps as well, however, whichever gun I buy, I'm having Mark Cerakote the entire slide after milling the cutout for the RMR.
  2. Gregg702

    Gregg702 Gold Member

    May 1, 2010
    Las Vegas
    Between the two, I would pick the M&P, but I like metal guns more than poly, so if it were me, I would go for a 1911 of some sort, or a Sig P220.

  3. Airborne Infantryman

    Airborne Infantryman 'Murica!

    Nov 20, 2009
    The 1911 is a no-go. I sold my Operator for $1200 to fund the gun I buy, and having it RMR-ed.

    Sig's aren't very good when it comes to being RMR'ed, either.
  4. Glock 21 Gen 4 is amazing. Best Glock out of the 22 I own. The MP 45 is a great firearm but between the 2 I would pick the 21 for accuracy and feel of the new Gen 4 grip
  5. Jim Watson

    Jim Watson

    Jul 10, 2001
    I have to go with the G21. A G24 with a submerged Tasco in a similar installation was the only Glock that ever felt good in my hand.
  6. mist


    Aug 15, 2010
    I'm issued a 21 as a duty pistol. Until recently I had a 45C, which is nearly the same size as the 45FS.

    The Glock has a blocky type grip while the Smith is ergonomically very friendly. The trigger on the Glock is smooth with a crisp clean break. The stock trigger on the Smith is...(how do I put this nicely?)...crap. After parting with just over $80 I fixed it with parts from Apex Tactical. I do prefer the cantilever type trigger on the Smith over the trigger on the Glock. I find the bold stock sights of the Glock easier to pick up and maintain than the small 3 dot sights on the Smith. The small front sight of the Smith is consistently covered over in grime after about 25 rounds. I prefer the take-down process of the Smith over the Glock. Flipping the little lever on the Smith for me is easier than trying to manipulate the spring loaded take down bar of the Glock. The Smith can be disassembled without manipulating the sear disconnect lever. I have not experienced any rust or other finish problems with either pistol. These are just a few quick observations I've made regarding both pistols and my preferences. The "acid" test comes in my actual firing of both. After many rounds through each pistol I find that I am consistently more accurate with the Glock and enjoy shooting it slightly more than the Smith. For me, it's the Glock over the Smith, but not by much.
    Last edited: Jul 26, 2012
  7. Go rent and shoot both if you can an then decide. I myself have been converted to the M&P's since shooting my first one but it is more of personal preference. I am now Glockless but I never had any problems with the three Glocks I once owned. I just like M&P's better.
  8. glock2740

    glock2740 Gun lover.

    Jun 19, 2008
    NW Ark.
    I like my XD45 better than the G21 and M&P 45. And I'm a huge Glock and M&P fan, if that says anything. :cool:
  9. alwaysshootin


    Nov 14, 2005
    FWIW, have owned both the M&P, and G21. Both are great, but, only own the G21 now. The biggest advantage to the Glock is after market support, and simpler design. Shooting side by side, I couldn't tell much if any difference.
  10. awpk03s


    Apr 1, 2007
    I have a Glock 21 Gen4, and it is a fantastic pistol. Mine is very soft shooting, great ergonomics, and is dead nuts reliable. Accuracy is also good.

    I have no experience with M&Ps but have heard many good things about them, you can't go wrong with either in my book.

    I actually was going to buy a brace of M&P 45s, but got a G30SF in a trade, and then had to get the 21 to go with it - I'm extremely happy with both of them.
  11. Kloogee


    Sep 16, 2011
    That is the way S&W documents for doing the takedown procedure for safety purposes (i.e. no trigger pull). However, you can still do the Glock takedown maneuver on the M&P by pulling the trigger. Doing it this way, there is no need to muss with the little lever in the magwell. So it's your choice how to do it. Honestly it's so simple to do, I can't see how that would be a decision point for your purchase.

    No rust issues so far with my 1.5 yr old M&P, but of course that is only one data point so take it with the necessary grain of salt.
  12. HauntedAlabama


    Jan 25, 2007
    Have you looked at a FN45? I had a Glock 21 and did not care for it, never tried the Smith so I cannot say, but I really like my FN and so does anyone that has shot it.
  13. Airborne Infantryman

    Airborne Infantryman 'Murica!

    Nov 20, 2009
    Decision made.

    I went with the Glock 21 Gen 4.

    Reasons why I went Glock 21 Gen 4 versus the M&P45-

    - The M&P45 I messed with at the store had a HORRIBLE trigger. Lots of take-up, and it felt like a slinky being compacted.
    - M&P45 held 10 vs the 13 of the G21 Gen 4.
    - M&P45 came with two mags. G21 Gen 4 came with 3.
    - More aftermarket support for the Glock.

    Did a couple hours research last night, and couldn't find any reports of them having issues.

    Mine has a born-on date of 4/21/2012.

    Gonna order a Grip Force Adapter for it as well.

    I'll be getting my Glock 19C slide back tomorrow, and as long as I like the RMR'ed Glock concept, I'll be sending my G21 Gen 4 slide to Mark at L&M Precision for the same RMR package I had him do to my G19C, however, I think I'll have the slide on my G21 cerakoted in either MagPul FDE or MagPul OD Green.


  14. bac1023


    Sep 26, 2004
    Out of those, I'd go M&P.
  15. Bill Keith

    Bill Keith

    Jan 3, 2006
    Humble, TX
    I like your decision!
  16. NEOH212

    NEOH212 Diesel Girl

    Mar 25, 2008
    North East Ohio
    I would go with the M&P in this case if choosing between the two. I say this only because the M&P had been on the market longer than the Gen 4 21 and has proven to be reliable. I don't feel there is enough feed back either way on the Gen 4 21 to warrant me purchasing one yet.

    If I had to choose a .45, I'd go with a HK or a Sig. :cool:
  17. brisk21


    May 13, 2008
    I prefer the Glock, but you can't go wrong with either.
  18. awpk03s


    Apr 1, 2007
    Congrats on the new Gen4 Glock 21!