Is this normal?

Gun, shooting and equipment discussions unrelated to CHL issues

Moderator: carlson1

Post Reply
atxgun
Senior Member
Posts: 923
Joined: Tue Oct 23, 2007 3:12 am
Location: Austin, TX
Contact:

Is this normal?

Post by atxgun »

Image

I initially just took this picture to show off my new kit but noticed something I found weird and wanted some feed back. See when the action is open the barrel is slants upwards slightly?

Is this normal/ok ?
NcongruNt
Senior Member
Posts: 2416
Joined: Sun Feb 25, 2007 12:44 am
Location: Austin, Texas

Post by NcongruNt »

yes.
atxgun
Senior Member
Posts: 923
Joined: Tue Oct 23, 2007 3:12 am
Location: Austin, TX
Contact:

Post by atxgun »

Yeah after taking it apart and looking at I see why it does that. My S&W 9mm was always straight as an arrow though so that's what got me wondering. Thanks!
WarHawk-AVG
Senior Member
Posts: 1403
Joined: Sat Jul 28, 2007 11:05 pm

Post by WarHawk-AVG »

Any pistol that uses the locking breech method the barrel will unlock then hinge down when the slide has retracted back enough

This is why the straight blowback designs have fairly uncommon accuracy, the barrel doesn't move

Wanna see it in action:
http://www.sniperworld.com/glock/
http://www.genitron.com/Glock23/IntGlock.html

For the colt fans
http://www.m1911.org/full_1911desc.htm
http://www.m1911.org/loader.swf
A sheepdog says "I will lead the way. I will set the highest standards. ...Your mission is to man the ramparts in this dark and desperate hour with honor and courage." - Lt. Col. Grossman
‘All that is necessary for the triumph of evil is that good men do nothing’ - Edmond Burke
User avatar
stevie_d_64
Senior Member
Posts: 7590
Joined: Fri Mar 04, 2005 11:17 pm
Location: 77504

Post by stevie_d_64 »

That's why we have a lot of fun with that little Bersa .380, doesn't hinge...
"Perseverance and Preparedness triumph over Procrastination and Paranoia every time.” -- Steve
NRA - Life Member
"Quis custodiet ipsos custodes?"
Μολών λαβέ!
WarHawk-AVG
Senior Member
Posts: 1403
Joined: Sat Jul 28, 2007 11:05 pm

Post by WarHawk-AVG »

Its why my 8 year old son who hasn't fired a pistol but a few times can hit an empty 1 gallon delo bottle at 7 yards w/ my Hi-Point .380...its is very accurate
A sheepdog says "I will lead the way. I will set the highest standards. ...Your mission is to man the ramparts in this dark and desperate hour with honor and courage." - Lt. Col. Grossman
‘All that is necessary for the triumph of evil is that good men do nothing’ - Edmond Burke
User avatar
Skiprr
Moderator
Posts: 6458
Joined: Fri Oct 20, 2006 4:50 pm
Location: Outskirts of Houston

Post by Skiprr »

Yeppers. The XD (and Glock, S&W M&P and Sigmas, most SIGs, etc.) are a tilt-barrel, external-locking system. The tilt-barrel is the most common system in autoloaders. The external-locking models rely on external surfaces at the top of the barrel and slide to lock the two together at the moment of combustion and until the bullet can clear the muzzle. The barrel tilts, unlocking the barrel-slide unit, and the slide is free to reciprocate all the way back and shove a new round into the chamber as it goes forward. With the slide locked back, that tilt will be more pronounced in some models than other, and generally more apparent in models with shorter barrels.

The internal-locking tilt-barrel types include the 1911, Hi-Power, and some of S&W's metal frame guns like the 910. It's and older design than the external-lockers. The locking lugs and recesses are all internal. That's a big reason 1911s can be slimmer and have a more rounded shape than the external-lockers. All things being equal, the external-lockers have an arguable reliability benefit over internal-lockers.

And before age-ranger calls me on it :grin: , Beretta makes a distinctly different mechanism where the barrel rotates to lock and unlock, rather than tilting, dropping, or staying in one place (gas blowback).
Join the NRA or upgrade your membership today. Support the Texas Firearms Coalition and subscribe to the Podcast.
I’ve contacted my State Rep, Gary Elkins, about co-sponsoring HB560. Have you contacted your Rep?
NRA Benefactor Life Member
WarHawk-AVG
Senior Member
Posts: 1403
Joined: Sat Jul 28, 2007 11:05 pm

Post by WarHawk-AVG »

Actually the military 92FS or (M9) uses a unorthodox unlocking mechanism that still operates on the verticle plane (its a locking block wedge or a CAM lock)..the new PX4 Storm uses a rotating locker
A sheepdog says "I will lead the way. I will set the highest standards. ...Your mission is to man the ramparts in this dark and desperate hour with honor and courage." - Lt. Col. Grossman
‘All that is necessary for the triumph of evil is that good men do nothing’ - Edmond Burke
User avatar
Skiprr
Moderator
Posts: 6458
Joined: Fri Oct 20, 2006 4:50 pm
Location: Outskirts of Houston

Post by Skiprr »

Molon_labe wrote:Actually the military 92FS or (M9) uses a unorthodox unlocking mechanism that still operates on the verticle plane (its a locking block wedge or a CAM lock)..the new PX4 Storm uses a rotating locker
Yep. The drop-lock system's functional reliability is one of the biggest reasons the 92 was chosen by the Pentagon in the '80s as a duty gun. With no interlocking recesses on the bottom of the slide, you can have a huge ejection port.

But the system makes for a thick and heavy pistol. The 9mm was about as far as it could go and still be practical; I don't think (correct me if I'm wrong) that Beretta ever made a successful drop-lock in .45. The concealed carry demands that began in the '90s sorta ruled out the drop-lock system as commercially viable because the pistols were so heavy, and when the Pentagon initiated a study (why that study-slash-RFP got scrubbed, I don't fully understand) to look for a standardized replacement, the writing was on the wall. Too, though reliable, the 92 had a history of not being terribly durable.

Sometime in 2008, a PX4 will be on my to-buy list. I'm intrigued by the rotary-barrel system. I just don't like the decocker (though one of my S&Ws has it). My prediction is that Beretta will drop the decocker and go to a version of a "safe-action" trigger (automatic decocking method) like the Glock and XD, keep and refine the rotary barrel, and introduce a new line of pistols in 2008 or 2009. Then we'll all want one, and age_ranger can say, "I told you so!"
Join the NRA or upgrade your membership today. Support the Texas Firearms Coalition and subscribe to the Podcast.
I’ve contacted my State Rep, Gary Elkins, about co-sponsoring HB560. Have you contacted your Rep?
NRA Benefactor Life Member
Post Reply

Return to “General Gun, Shooting & Equipment Discussion”