Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > Hammer question on a lower build.

Reply
 
LinkBack Thread Tools Display Modes
Old 05-12-2013, 06:46 PM   #1
Feedback Score: 0 reviews
 
Serapis's Avatar
 
Join Date: Feb 2012
Posts: 17
Liked 1 Times on 1 Posts

Default Hammer question on a lower build.

I just built my first lower from scratch and I have a question regarding the hammer. This is a spikes enhanced LPK in a DPMS lower. The hammer is super stiff to the point where it will sit halfway between cocked and fired.


Name:  image-2053378552.jpg
Views: 117
Size:  31.4 KB

When I fire it (without letting it strike the lower) it seems weak. Should I assume that this is a symptom of a brand new assembly and just lube it up and try and break it in, or is there a bigger problem? Mechanically everything seems ok. I can cock the hammer and pull the trigger. It just doesn't seem loose enough to strike with much force.

Thanks.



__________________
Serapis is offline  
 
Reply With Quote

Join FirearmsTalk.com Today - It's Free!

Are you a firearms enthusiast? Then we hope you will join the community. You will gain access to post, create threads, private message, upload images, join groups and more.

Firearms Talk is owned and operated by fellow firearms enthusiasts. We strive to offer a non-commercial community to learn and share information.

Join FirearmsTalk.com Today! - Click Here


Old 05-12-2013, 07:05 PM   #2
Si Vis Pacem,Para Bellum
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
rifleman1's Avatar
 
Join Date: Aug 2009
Location: Live Oak,California
Posts: 1,351
Liked 252 Times on 154 Posts
Likes Given: 730

Default

you might need check the side wall tolerences i always take a dremel and cclean up the sides a little if its to tight.



__________________

No Bells.No Whistles.Just perfection.GLOCK

rifleman1 is offline  
 
Reply With Quote
Old 05-12-2013, 09:33 PM   #3
Feedback Score: 0 reviews
 
Quentin's Avatar
 
Join Date: Apr 2010
Location: Idaho
Posts: 6,255
Liked 733 Times on 544 Posts
Likes Given: 703

Default

Better double check the hammer spring/installation. No way the hammer should catch like that, it's not a 1911, no half cock!

__________________

The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
You'll remember the quality of a gun long after you forget how much you paid for it.
________________________________________
US Army 1966-69, VFW Life Member, Retired Geek

Quentin is offline  
purehavoc Likes This 
Reply With Quote
Old 05-12-2013, 11:02 PM   #4
Feedback Score: 0 reviews
 
SSGN_Doc's Avatar
 
Join Date: May 2012
Posts: 3,833
Liked 1744 Times on 1049 Posts
Likes Given: 369

Default

What Quentin said.

Make sure the legs of the springs are oriented correctly. Make sure the hammer can rotate on the pin freely before it is installed. Make sure the anti-rotation devices on the side are not causing problems.

__________________
SSGN_Doc is offline  
 
Reply With Quote
Old 05-13-2013, 03:42 AM   #5
Feedback Score: 0 reviews
 
Join Date: Sep 2011
Location: Molon Labe,Missouri
Posts: 439
Liked 59 Times on 49 Posts
Likes Given: 23

Default

Being your first build, did you use any oil on the Pins? Sounds like Hammer and other items may be dry. Give those suckers some oil, and I'll bet you won't have any hangups. Also Hammer Spring, if not installed correctly will give weak strikes, and possibly hangup, but with KNS Pins, you wouldn't know, because the Pins wouldn't pop out, like stock pins would/could.

__________________
Triumphman is offline  
 
Reply With Quote
Old 05-13-2013, 01:47 PM   #6
Feedback Score: 0 reviews
 
Serapis's Avatar
 
Join Date: Feb 2012
Posts: 17
Liked 1 Times on 1 Posts

Default

Thanks all for the advice. The springs are installed correctly. That I know for certain. I think that the problem is friction between the pin and the hammer. I have not yet lubricated the trigger system. I will do so tonight and report back on whether or not the hammer is still sticky. I guess I just didn't figure I'd have that much friction.

__________________
Serapis is offline  
 
Reply With Quote
Old 05-13-2013, 04:46 PM   #7
Feedback Score: 0 reviews
 
Serapis's Avatar
 
Join Date: Feb 2012
Posts: 17
Liked 1 Times on 1 Posts

Default

Turns out it was just dry. I'll take my 50 lashes for being an idiot without complaining.

__________________
Serapis is offline  
 
Reply With Quote
Old 05-13-2013, 07:20 PM   #8
Feedback Score: 0 reviews
 
Quentin's Avatar
 
Join Date: Apr 2010
Location: Idaho
Posts: 6,255
Liked 733 Times on 544 Posts
Likes Given: 703

Default

Quote:
Originally Posted by Serapis View Post
Turns out it was just dry...
Man I've never seen one dry enough to catch like that! Keep an eye on it.
__________________

The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
You'll remember the quality of a gun long after you forget how much you paid for it.
________________________________________
US Army 1966-69, VFW Life Member, Retired Geek

Quentin is offline  
purehavoc Likes This 
Reply With Quote
Old 05-14-2013, 12:32 AM   #9
Feedback Score: 0 reviews
 
ZombieKiller83's Avatar
 
Join Date: Mar 2011
Location: Prior Lake,Minnesota
Posts: 422
Liked 8 Times on 7 Posts
Likes Given: 3

Default

Quote:
Originally Posted by Serapis View Post
Turns out it was just dry. I'll take my 50 lashes for being an idiot without complaining.
If it makes you feel better, I forgot to put in the disconnecter on my first build . Good thing I field tested it before touching off rounds
__________________

"If guns kill people then does that mean the spoon is the reason Rosie O'Donnell is fat"

"Guns don't kill people.......People kill people"

ZombieKiller83 is offline  
 
Reply With Quote
Old 05-14-2013, 05:05 PM   #10
Feedback Score: 0 reviews
 
Garadex's Avatar
 
Join Date: May 2011
Location: Kalifornia
Posts: 1,267
Liked 225 Times on 176 Posts
Likes Given: 228

Default

Quote:
Originally Posted by ZombieKiller83
If it makes you feel better, I forgot to put in the disconnecter on my first build . Good thing I field tested it before touching off rounds
That would've been fun to find out at the range.


__________________

I'm gonna stop you right there, you just said an AR-15 is a high-powered rifle. It is obvious you don't know anything about guns and I shall ignore anything you say from this point on.

Garadex is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
Finished my first lower build ScottA AR-15 Discussion 3 01-13-2013 06:32 PM
First lower build. jpfiester AR-15 Discussion 3 12-27-2012 04:50 AM
ar lower build or buy jds AR-15 Discussion 3 09-29-2012 11:37 AM
First New AR Build - What Stripped Lower is Best? Snakedriver AR-15 Discussion 50 07-22-2011 01:42 AM
SKS Hammer Question keytosuccess... Curio & Relic Discussion 2 06-04-2007 10:47 PM