First Build Here, Am I Missing Anything?
Firearm & Gun Forum - FireArmsTalk.com > Long Guns > Auto & Semi-Auto Discussion > AR-15 Discussion > First Build Here, Am I Missing Anything?

Reply
 
LinkBack Thread Tools Display Modes
Old 12-05-2010, 06:52 AM   #1
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 48
Default First Build Here, Am I Missing Anything?

I am finally finishing my first AR build (and first AR) I ran out of funds for a while back. Im pretty sure I have everything ordered that I will need to complete the rifle, and wanted the experts to give me feedback. I decided to go with a complete upper to avoid buying more expensive tools.

CMMG Stripped Lower Receiver
Del-Ton Complete Lower Parts Kit
M4 CAR Buttstock Assembly - With Buffer and Spring
Yankee Hill Machine - Black Diamond Specter XL Top End

Do I have everything I will need to complete my AR (not counting tools)?

__________________
FightinTexasAggie 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 12-05-2010, 03:35 PM   #2
Feedback Score: 0 reviews
 
mjkeat's Avatar
 
Join Date: Jul 2010
Location: Wichita,Kansas
Posts: 4,026
Liked 8 Times on 8 Posts

Default

It didnt look like the stock kit came with a buffer plate. Its the plate that goes on the end of the lower and is held in place by the castle nut. It holds the rear take down pin detent spring in place.

__________________
mjkeat is offline  
 
Reply With Quote
Old 12-09-2010, 05:55 PM   #3
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 48
Default

I got the parts in yesterday, and it did come with the plate. I have 2 more questions for now.

What needs to be oiled/lubricated as I put everything together?
What do I need to do to function test it before any live rounds see the rifle?

__________________
FightinTexasAggie is offline  
 
Reply With Quote
Old 12-09-2010, 06:13 PM   #4
Feedback Score: 0 reviews
 
Join Date: Mar 2008
Location: I see you, and you will not know when I will strike
Posts: 24,301
Liked 3479 Times on 1609 Posts
Likes Given: 3590

Default

For just the lower, or for the complete rifle?

The lower is going to require very little in the way of grease or oil to start with. A very thin wiping down at the most just to protect against the oils from your hands.

DO NOT - and I can not say this enough - DO NOT:

Assemble the lower, cock the hammer and pull the trigger allowing the hammer to slam forward into the front half of the lower receiver!

NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER, NEVER Do that.

__________________
Dillinger is offline  
 
Reply With Quote
Old 12-09-2010, 07:49 PM   #5
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Sniper03's Avatar
 
Join Date: Jun 2010
Location: Tennessee
Posts: 5,290
Liked 2658 Times on 1292 Posts
Likes Given: 1314

Default

Fightin,

Since you purchased the complete Upper & Barrel Assembly together you do not need anything but a good weapon lube like G-96, Breakfree (Of course shake it up first). As Dillinger advised just lube the entire weapon with a light coat and wipe the excess off. All of your parts being new have little if any lube on them. Put a drop of oil (Lube on the spring coils of both the Hammer and Trigger. Lube your Bolt Carrier Group well before you start shooting. I like them looking a little wet. Then you can do a few break in shots and enjoy! If you would have put the barrel on the upper then you would have needed to use a High Temp Anti Seize grease on the threads of the receiver before putting the barrel nut in place. One other word of caution. Be sure when you installed the Stock Extension Tube into the lower Receiver that the engagement of the Extension Tube is approximately engaged 1/2 way between the little tip of the Buffer Retainer and the outside edge of the Buffer Retainer. And of course the Castle Nut is tight and will not come loose.
If not you can actually tear up a receiver if it does not have proper location engagement and the Buffer Retainer starts coming out of the receiver.
Good luck with the new rifle! Sounds great!

03

__________________
Sniper03 is offline  
 
Reply With Quote
Old 12-09-2010, 09:39 PM   #6
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 48
Default

I took the stock in to a local shop that does a lot of work on ARs instead of buying the tool. It looks like they tightened the buffer tube right against the piece on the retainer, but it is not blocking the retainer from moving at all.

I'm kind of confused as to how the trigger/hammer/disconnecter work. The trigger will barely move unless the hammer is down. Might be normal, but what pulls the hammer down every time you pull the trigger? The disconnecter also will barely move. I checked a few guides and can't see anything I might have done wrong.

__________________
FightinTexasAggie is offline  
 
Reply With Quote
Old 12-09-2010, 10:49 PM   #7
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Sniper03's Avatar
 
Join Date: Jun 2010
Location: Tennessee
Posts: 5,290
Liked 2658 Times on 1292 Posts
Likes Given: 1314

Default

Fightin,

The closer the extension tube (Stock Tube) is to that tip and still does not inhibit the Buffer Retainer the better it is. Sounds like they did a good job.
As far as the issue with the Disconector. It may be? That you have the Disconector Spring in upside down. The spring has a larger coil on one end and a smaller coil on the other. The Large Coil goes down into the Trigger recess first and snaps in there so it will not fall out. The small coil is at the top and goes in the window on the Disconector. If you have it upside down the larger coil is at the top and when you push down on the Disconector the large coil hangs on the top edge of the trigger. Check that out and let me know if I can be of any assistance.

03

__________________
Sniper03 is offline  
 
Reply With Quote
Old 12-09-2010, 10:55 PM   #8
Feedback Score: 0 reviews
 
Join Date: Feb 2009
Posts: 48
Default

The disconnecter spring is in right. I may have everything right, I'm just not real familiar with how everything is supposed to work. I probably will take it in tomorrow and let the experts go through and check it out just to be safe.

__________________
FightinTexasAggie is offline  
 
Reply With Quote
Old 12-09-2010, 11:06 PM   #9
Supporting Member
FTF_SUPPORTER.png
Feedback Score: 0 reviews
 
Sniper03's Avatar
 
Join Date: Jun 2010
Location: Tennessee
Posts: 5,290
Liked 2658 Times on 1292 Posts
Likes Given: 1314

Default

Fightin

Do you know how to do a function check on it. If it does that correctly you are OK. If you do not I will advise you. What happens is when the trigger is pulled and the weapon is fired, since in theory the rifle is cycling at around 700 rounds a minute as far as mechanics speed. Since it happens so quickly you could not get your finger off of the trigger that fast and the hammer would just follow the Bolt Carrier forward and probably would not fire. The Disconector grabs the hammer lets the hammer spring maintain tension and the Bolt Carrier goes into battery. When the operator lets go and the trigger goes forward the Hammer is transferred to the sear and the front portion of the trigger. If you attempt to do this with your fingers you have a tendency to force down farther which causes over travel and it does not seem to work correctly.

__________________
Sniper03 is offline  
 
Reply With Quote
Old 12-09-2010, 11:27 PM   #10
Feedback Score: 0 reviews
 
mjkeat's Avatar
 
Join Date: Jul 2010
Location: Wichita,Kansas
Posts: 4,026
Liked 8 Times on 8 Posts

Default

Go here and check out the videos just below the top right corner.

Just checked my factory LWRC and the trigger has play with the hammer forward and with the hammer locked. When locked the hammer will draw in slightly when working the trigger. As long as the hammer doesnt drop with the safety on and it passed a functions check you should be good.

__________________

Last edited by mjkeat; 12-09-2010 at 11:36 PM.
mjkeat is offline  
 
Reply With Quote
Reply

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Firearms Forum Replies Last Post
LEO Question: Missing Link Benning Boy Legal and Activism 2 04-29-2010 07:08 PM
DHS - Guns Gone Missing canebrake Legal and Activism 8 02-26-2010 11:42 PM
Is there anything I am missing?????? truevil1313 Survival & Sustenance Living Forum 28 02-03-2009 01:21 AM