PDA

View Full Version : Need help building my OLL


DedEye
01-12-2007, 12:36 AM
I got my RRA LPK and started building my Doublestar lower yesterday.

Things have not gone well.

I'm going to be picking up roll pin punches tomorrow and a rubber mallet and a vise plier (a la ARFcom's guide), but doing it by hand hasn't worked out so well.

I bent/broke the spring that was intended to hold the pivot pin in, anyone know where I can get an extra without buying a whole LPK?

When installing the pistol grip with the pistol grip screw, do I insert the screw down into the pistol grip, or insert the screw through the grip and into the receiver?

I'm also having trouble installing the hammer. I'm not sure how the spring should look when installed on the hammer and how it needs to be placed in the lower. I think I have it right, but I can't install it anyway because I can't push the trigger pin through the hammer because there's some kind of metal obstruction inside the hammer where the pin is supposed to go. Is that supposed to be there or is my hammer out of spec? Can anyone provide pictures of how the hammer should be installed?

I'm sure to have more questions, stay tuned ;). Thanks for the help.

Rivet
01-12-2007, 12:46 AM
The gun show is this weekend in ventura. Frank from SOG has alot of AR bits. The grip screw goes through the grip into the reciver.

kap
01-12-2007, 12:49 AM
http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782
http://www.ar15.com/content/guides/assembly/lower/

Spring

http://www.midwayusa.com/ebrowse.exe/browse?TabID=9&Categoryid=17081&categorystring=10636***10560***8807***11619***

and any other parts you just may happen to bend, break or destroy.

http://www.midwayusa.com/ebrowse.exe/resources?tabid=9&page=schematics/ar15.htm

blastphemind
01-12-2007, 12:50 AM
Stag arms sells individual parts from their LPK but if the spring is all you want shipping's gonna kill..

When I install my pistol grip I insert the lock washer into the screw then insert the screw /w the lock washer into the pistol grip. I think it makes it easier to connect it to your receiver that way.

Regarding you hammer...hmmmm what kind of metal obstruction are you having?

Rivet
01-12-2007, 12:51 AM
http://photos.ar15.com/ImageGallery/Attachments/DownloadAttach.asp?iImageUnq=44242
This should help too. http://www.ar15.com/forums/topic.html?b=3&f=66&t=241858

leelaw
01-12-2007, 12:53 AM
The hammer has a spring loaded detent of sorts - it is meant to ride int he groove of the hammer pivot pin, so the pin shouldn't walk out of the hole. Lightly tap with a hammer.

pewpewguns
01-12-2007, 1:41 AM
Damn the same thing happened to me tonight. I bent the pivot pin spring pretty bad, I'm hoping I can shove it in the pistol grip end of the safety mechanism. It seems that the spring I bent was one of three, Does anyone happen to know if the U-15 stock comes with a similar spring? That would save me trouble. Otherwise I can probably work the bent end into the U-15.

I also had trouble with the hammer for a bit, Just make sure its facing the right way by looking at a picture and noticing the mag well. :\ I was trying to put it in backwards. that might not be your problem but It helped me.

creampuff
01-12-2007, 3:17 AM
Hope this helps:
I took these pictures before I broke it in..it no longer looks that clean anymore.


http://i76.photobucket.com/albums/j36/creampuff464/DSC_3085copy.jpg

http://i76.photobucket.com/albums/j36/creampuff464/springs.jpg

http://i76.photobucket.com/albums/j36/creampuff464/DSC_3102.jpg

http://i76.photobucket.com/albums/j36/creampuff464/DSC_3104.jpg

creampuff
01-12-2007, 3:18 AM
whooops...one more.

http://i76.photobucket.com/albums/j36/creampuff464/DSC_3099.jpg

naimad
01-12-2007, 7:37 AM
Check out www.ar15.com/content/guide/assembly/lower/
this is a step by step build just take your time
check with 10% firearms order the oh shoot kit it has those parts that get lost or go flying across the room
www.tenpercentfirearms.com

Rugerdaddy
01-12-2007, 9:20 AM
I'm picking up my stripped lower tomorrow, and my lower parts kit is due in Tuesday. The above (especially fantastic photos, creampuff) are very helpful. Thanks guys. :)

p.s. Any peculiarities with RRA 2-stage trigger that you might be able to warn me about?

Scarecrow Repair
01-12-2007, 9:23 AM
p.s. Any peculiarities with RRA 2-stage trigger that you might be able to warn me about?
Easier than the standard trigger since the two trigger parts are already together including spring. Hammer's still a witch.

Rugerdaddy
01-12-2007, 9:50 AM
Easier than the standard trigger since the two trigger parts are already together including spring. Hammer's still a witch.

I'm buying the complete lower kit, not just the trigger. Will the two trigger parts still be "already together including spring"? I hope. :)

Fjold
01-12-2007, 9:51 AM
I'm buying the complete lower kit, not just the trigger. Will the two trigger parts still be "already together including spring"? I hope. :)


Yes, the trigger and disconnetctr, etc will come assembled, then you just have to cuss at the hammer.

rips31
01-12-2007, 11:35 AM
when i got my stag lpk from wes, everything relating to the trigger/hammer came assembled. i was a bit frantic looking for the missing pieces, until i looked closely.

Aluisious
01-12-2007, 11:43 AM
http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782
http://www.ar15.com/content/guides/assembly/lower/

Spring

http://www.midwayusa.com/ebrowse.exe/browse?TabID=9&Categoryid=17081&categorystring=10636***10560***8807***11619***

and any other parts you just may happen to bend, break or destroy.

http://www.midwayusa.com/ebrowse.exe/resources?tabid=9&page=schematics/ar15.htm
I used the http://www.ar15.com/content/guides/assembly/lower/ guide to assemble my lower.

I assume I did it right, because my gun goes bang bang bang, and not kablooey! :D

DedEye
01-12-2007, 11:45 AM
Thanks for all the help. Creampuff, those photos are probably gonna be a life saver.
To everyone who posted the AR15 guide: yeah, that's the one I was using ;). I'm gonna go pick up some roll pin punches today, but I guess I'm gonna get screwed with shipping ordering the replacement spring :(.

I'll post with more questions if I have them (almost a certainty) and will try to include pics if need be.

creampuff
01-12-2007, 11:49 AM
when i got my stag lpk from wes, everything relating to the trigger/hammer came assembled. i was a bit frantic looking for the missing pieces, until i looked closely.

My STAG LPK came with the hammerspring preassembled backwards, and did you have a similar experience?

Aluisious
01-12-2007, 11:52 AM
Thanks for all the help. Creampuff, those photos are probably gonna be a life saver.
To everyone who posted the AR15 guide: yeah, that's the one I was using ;). I'm gonna go pick up some roll pin punches today, but I guess I'm gonna get screwed with shipping ordering the replacement spring :(.

I'll post with more questions if I have them (almost a certainty) and will try to include pics if need be.
Good luck with the "roll pin punches." I didn't find them at Osh or Home Depot, just regular pin punches.

The pin in my trigger guard now looks like a gorilla smashed it in there. Oh well!

dbawmp
01-12-2007, 12:12 PM
check with 10% firearms order the oh shoot kit it has those parts that get lost or go flying across the room
www.tenpercentfirearms.com


+ 1 on the Oh Shoot Kit. I've shot many buffer retainer pins and springs into the neighbors yard... and since 10% is somewhat local, I got the replacment parts in a timley manner.

SigShooter
01-12-2007, 12:21 PM
I used the ViseGrip method as mention in this thread (http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782)(about 1/4 down the page.) and it worked like a charm. No marring of the receiver or deformation of the roll pin. Just make sure you use some electric tape or similar on the jaws. Masking tape will tear too easy and can cause scratches to the receiver. However, masking tape on the receiver (especially the blue "low adhesive" kind is always a good idea.

Rugerdaddy
01-12-2007, 12:30 PM
Yes, the trigger and disconnetctr, etc will come assembled, then you just have to cuss at the hammer.
Oh, I'm GOOD at that!

Also, there is good info on assembling lower here:

http://http://www.perfectunion.com/vb/showthread.php?t=55496 (http://www.perfectunion.com/vb/showthread.php?t=55496)

And, I bought roll pin punches at Brownell's. here:

http://http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=5551&title=ROLL+PIN+PUNCHES (http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=5551&title=ROLL+PIN+PUNCHES)

According to the info at PerfectUnion you want the numbers 3, 4, and 5 punches.

Good luck! :)

roor1200
01-12-2007, 12:30 PM
i personally didnt have to use any punches. they would have been helpful but instead i just used a small hammer, a small cloth/towel to protect the lower and a wooden chopstick.lol had to improvise.... but with the RR NM LPK the trigger should be already assembled. well thats how i got mine from wes at 10%. gl and happy building. pm me if u have any questions. im in the la area.

permanent_45
01-12-2007, 12:34 PM
I got my roll pin punch set from Grainger. If you are going to build more then 1 OLL I say get the roll pin set. All it takes is to slip off of the pin and screw up the finish on the lower. Then you will wish you spent the extra $$$

rips31
01-12-2007, 1:02 PM
My STAG LPK came with the hammerspring preassembled backwards, and did you have a similar experience?
nope. i thought it was, until i rotated the spring and it was exactly right. :)

shark92651
01-12-2007, 1:47 PM
I assembled two lowers on the same evening. I used the roll pin punches to drive in the two rollpins on the first lower and used the vise-grip method on the second. The vice-grip method is by far a lot faster and much easier. I used the pin to just recess it by using a couple hammer strikes after I had squeezed the pins in flush. The only other time I used a roll pin punch was to help guide in the hammer and spring. I used the roll pin punch to get the hammer in place and then pushed it out with the actual pin.

DedEye
01-12-2007, 2:57 PM
Anyone have a good place online to buy roll pin punches and pivot pin installation tools?

permanent_45
01-12-2007, 3:46 PM
Brownells has both. I used the hex wrench that I used for the grip and a razor blade to install the pivot pin. It was so EZ I thaught I did it wrong.

Rugerdaddy
01-12-2007, 4:03 PM
Anyone have a good place online to buy roll pin punches and pivot pin installation tools?

Go up about 7 posts and you'll find a link to Brownell's. :)

supergimp
01-12-2007, 4:07 PM
I did all of my assembly with a brass jewelers hammer and brass punches I got att Harbor Freight. That and a little blue masking tape and voila! no marring.

Rugerdaddy
01-12-2007, 4:14 PM
I did all of my assembly with a brass jewelers hammer and brass punches I got att Harbor Freight. That and a little blue masking tape and voila! no marring.
Well done! I went to my local Harbor Freight, couldn't find any brass punches, asked them and they didn't know what I was talking about. Tried Sears, too. They knew what I wanted, but didn't have any. So, I ordered from Brownell's.

supergimp
01-12-2007, 4:28 PM
Well done! I went to my local Harbor Freight, couldn't find any brass punches, asked them and they didn't know what I was talking about. Tried Sears, too. They knew what I wanted, but didn't have any. So, I ordered from Brownell's.

The punches were something like this: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=41976

Couldn't find the hammer on the site.

Rugerdaddy
01-12-2007, 4:51 PM
The punches were something like this: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=41976

Couldn't find the hammer on the site.

That is EXACTLY what I was looking for. Well, I've already ordered the ones from Brownell's now, so I'll stick with them. They have the advantage of having a little point the guides into the roll pin, but only three of them cost about $15.00 with shipping. I wish I'd found these brass ones earlier. I should have known to look at their website! Thanks anyway. :)

p.s. bought a little brass hammer at a recent gun show, so I'm OK there.

DedEye
01-12-2007, 10:01 PM
Thanks for the Brownells link Ruger, I'll be guying that set eventually.

In the meantime, I made do without the roll pins, and now have several other questions/issues.

First, on the topic of Moly Grease: The ARFcom guide recommends using some, but the best I could find so far is "Isky Rev Lube with Moly Sulphide" for car engines. Would that work, or should I just stick with Break Free CLP? Most of the LPK already had grease on it from the grease bag, but from function testing the hammer/trigger (finally got that installed) I could see where it could use the grease.

I got the hammer in by lightly tapping the trigger pin through the receiver while holding the hammer in place (lots of spring tension, rather difficult). I also started the roll pin for the bolt catch in the first hole, but I seem to have hammered it in too far already and can't put the bolt catch in now. I don't have any punches yet to push it back out, any other ways I could push/pull the pin out enough to install the bolt catch?

On the topic of the bolt catch, I have another problem with the bolt catch spring and bolt catch buffer. Now that I'm looking at the parts list (http://www.ar15.com/content/guides/assembly/lower/lowerKit.gif) I think I may have accidentally swapped the bolt catch spring and the disconnector spring (thus answering my own question). I'm off to go take apart my trigger assembly if I can so I can remove the bolt catch spring from under the disconnector (this may require me waiting until I have a punch set).

I'm also having a bit of trouble installing the trigger guard roll pin. I'm trying to hammer it in with a hammer while the trigger guard is lined up with the lower, but can't get it to start. Guess I'm gonna have to wait until I have the punches.

Ratters
01-12-2007, 11:45 PM
DON'T TRY TO HAMMER IN THE ROLL PINS. Use channel lock pliers wrapped heavily with electrical tape. Slowly squeeze in the roll pins a little bit at a time. I put together my last lower only use my roll punches to help put in the front pin detent spring. Many people bust their lowers trying to hammer in the roll pins without properly supporting the receiver.

And for scratches and whatnot Birchwood Casey makes a sharpie like pen that works really well. http://www.birchwoodcasey.com/sport/images/Products/15101_lrg.jpg

DedEye
01-12-2007, 11:59 PM
I was being careful not to destroy my receiver by hammering too hard, hence my inability to insert the roll pins successfully.

New problem: I can't get my Watson extended takedown pin to pull out easily/at all. I removed the buttstock and applied CLP to the takedown pin, the detent, and the spring and its still impossible to move with the stock installed.

kap
01-13-2007, 12:37 AM
Try pushing on it from the opposite side with your thumb while pulling on it with the other hand. Works like a charm. Do this a few times and it will get easier.

Your receiver is sturdier than you think. As long as all the tabs are fully supported you can hammer pretty hard. Just protect the receiver by wrapping it several times with a towel. The vise grip method is much gentler though.

Ratters
01-13-2007, 11:07 AM
My Watson was a bit stiff at first too. For sime reason when I took off and reattached the buttstock it became easier though I'm not sure what I did. Make sure the pin slot is facing the right direction too.

A324
01-13-2007, 3:37 PM
Try pushing on it from the opposite side with your thumb while pulling on it with the other hand. Works like a charm. Do this a few times and it will get easier.


Ditto on using your thumb to start it moving. After a while it will become automatic everytime you want to break open your rifle. Gets easier each time you do it.

DedEye
01-13-2007, 4:42 PM
No go on the takedown pin. Its stuck in tight and there's not enough space on the left side of the receiver to push on it while I pull. I don't have an upper installed, I'm just trying to get the pin to move easily in the lower.