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Gunsmithing & How To Pro, Amateur & WECSOG and Tutorials, Guides & OLL Build Instructions |
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#1
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F'n Bolt Catch Roll Pin!
Seriously this is my first solo ar15 stripped lower assembly. I'm using a DPMS LPK and a JD lower [which is funny because it's my initials too]. So anyway I start the pin in and it take a few firm whacks, but nothing major. I get it in maybe 1/2 of the way into the first post. Then I give it a few firm whacks and it just catches and slightly goes in at an angle. So I think "F" it was already distressed and if I tried to pull it out I'd either crush it or break it. So I decide to do the dumb male thing... hit it harder and hope it works itself out. Well that halfway worked and it went almost to the point where I could put in the bolt catch... then it breaks. I had to go in with a punch from the other side and smash the !@#$ out of it to get it out. I was swinging pretty much as hard as I dared.
So tomorrow before I go hang out with my friend [if she doesn't flake] I need to run Ironsights and see if they sell just that part by itself. If not I'll just buy another complete LPK [because eventually I will build another] and order a few of those damn pins by itself. Are there any friggen tips to make my life easier? I was thinking of going in with a dremel and ever going in with a fine grinding bit and just working the holes on the receiver itself very lightly. I want to make sure there are no burs and smooth it out slightly. Then taking some fine grit sandpaper to the pin itself and smoothing it out. Then lubing the crap out of the pin and giving it nice firm 100% straight whacks and see what happens. The stupid thing is that I just decided to do the rest of the build. Everything is SOLID and there's no wiggle between the upper and lower. Function check is 100%... minus there's the fact there's no bolt catch... and I marred my receiver around the holes for the bolt catch. I wish there was a swear jar in my garage tonight... I would have made myself a millionaire.
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#4
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I'll try that... just sucks that I have to wait another day...
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#5
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Quote:
It didn't get damaged until I had to smash the bit of roll pin that snapped off. I went from using a ball hammer... to a dead blow... to a lil' mini sledge It was in there good... real good... it was like mandingo got stuck in a midget
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#7
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Quote:
This is all good material for the next solo assembly... I still don't believe I have to wait until tomorrow...
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#8
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Use a set of Channel locks. Tape the sarrated parts with duct tape. Taper the ends of the roll pin before inserting, I use tweezers to hold on to the pin. With the lower flat on the table use downward pressure on the lower to avoid slippage. Slowly squeeze the pin into the hole. Halfway in put the boltcatch on (dont forget the spring). Patience is needed ...
EDIT: The RRA lpk has the best roll pin, they dont even need to be tapered before installation .... |
#9
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I used a mag well block and put her in the vice. Spring & bolt catch buffer won't be forgotten. I almost lost the buffer twice because it kept jumping out from me pounding the crap out of it. Eventually I wised up and put it in my toolbox
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Need Pest Control? Message me! "Happiness in intelligent people is the rarest thing I know." - Hemingway |
#10
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plus run a fine file over the starting end to take off any sharp edge and put a slight taper.
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#11
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^^ That, and I butter the starting end with Vaseline, then use tape wrapped jaw channel locks, and it slides right in, every time.^^
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"If Congress can do whatever in their discretion can be done by money, and will promote the General Welfare, the Government is no longer a limited one, possessing enumerated powers, but an indefinite one, subject to particular exceptions." --James Madison 'Letter to Edmund Pendleton', 1792 |
#12
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I conquered that *****. Thanks for all the advice guys
I ended up going in with a small dremel bit and reaming out the holes in the receiver a little bit. It was a super fine bit. I just wanted to take out any imperfections and smooth it out slightly. I compressed the first part of the pin a bit with some pliers. I used a little axle grease on the first half of the pin. I tried the channel locks but they didn't quite work out perfectly. I used it to start it in about 25% of the way. Then I went in with a long punch and firm but gentle taps and got it drove in. Success!
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Need Pest Control? Message me! "Happiness in intelligent people is the rarest thing I know." - Hemingway |
#13
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Lube helps whenever you are trying to get something into a tight hole.
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Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#14
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Quote:
This may also be my new sig line. |
#15
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It was advice to make his whole life easier, not just the bolt catch part.
__________________
Randall Rausch AR work: www.ar15barrels.com Bolt actions: www.700barrels.com Foreign Semi Autos: www.akbarrels.com Barrel, sight and trigger work on most pistols and shotguns. Most work performed while-you-wait, evening and saturday appointments available. |
#17
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+1 This.
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“Quemadmoeum gladuis neminem occidit, occidentis telum est.” ("A sword is never a killer, it is a tool in the killer’s hands.") - Lucius Annaeus Seneca, circa 45 AD NRA Life Member |
#18
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Quote:
Quote:
Words to live by !!! LOL .... |
#20
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With advice like that, what could possibly go wrong?
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Need Pest Control? Message me! "Happiness in intelligent people is the rarest thing I know." - Hemingway |
#21
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I use duct tape. I tried the blue painters tape, but duct tape is thicker and is tougher.
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#22
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The blue painters tape is ok to protect the finish and make sure there's no adhesive left behind. I used blue painters tape for the base, and then electrical tape on top of that. I couldn't find my duct tape for some reason... which means I'll have to buy a mega value pack next time I'm at the store
Oh and my rifle got the last laugh. I installed the damn hammer spring backwards so the friggen trigger pin kept walking out on me! Corrected it and now it's all good... but damn I was getting frustrated
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Need Pest Control? Message me! "Happiness in intelligent people is the rarest thing I know." - Hemingway |
#24
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I used the guide on here about assembling a lower and at http://www.ar15.com/forums/topic.html?b=3&f=4&t=226782 It was my first time, but went well thx to the guide's.
After the part about putting in your LPK, there is a good section about using vice grips to put in the roll pin's from hell... |
#26
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watch this video!!!!!!
http://www.brownells.com/.aspx/lid=11630/learn/
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USMC 95-99 |
#27
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Quote:
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#28
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i have built around 10 lowers and had this happen to me once. what i did was i went to orchard supply and picked up another roll pin and drove it in from the other way. trying to get it out is a ***** and vise grips make it worse, it smashes it in tighter because it flares it.
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#30
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Everything worked 100% I of course function checked it before heading out the range. I had the damn trigger pin back out on me... but turns out I installed the hammer spring backwards. Fixed that when I got home... and then I started cleaning the bolt... carbon... scrape... ug...
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