jhugz Posted June 17, 2014 Share Posted June 17, 2014 What am I doing wrong? Voodoo barrel, DPMS upper. The alignment pin is too large. Link to comment Share on other sites More sharing options...
BitchinCamaro Posted June 18, 2014 Share Posted June 18, 2014 Have you tried a different barrel? Link to comment Share on other sites More sharing options...
jhugz Posted June 18, 2014 Author Share Posted June 18, 2014 Have you tried a different barrel? Don't have one, I'll have to see if I can find one. Link to comment Share on other sites More sharing options...
apetrulis01 Posted June 18, 2014 Share Posted June 18, 2014 Call Adams Arms Link to comment Share on other sites More sharing options...
GreenDragon64 Posted June 18, 2014 Share Posted June 18, 2014 Or DPMS. Link to comment Share on other sites More sharing options...
Larry White Posted June 18, 2014 Share Posted June 18, 2014 rat tail file-----------------Larry Link to comment Share on other sites More sharing options...
Paul-the new guy Posted June 18, 2014 Share Posted June 18, 2014 force it Link to comment Share on other sites More sharing options...
hrdstmax Posted June 18, 2014 Share Posted June 18, 2014 Looks like a problem with the pin and not the receiver. If you just cant wait to shoot it I would file the receiver, if you have the time and patience (I don't) you can send it back for a replacement barrel. Link to comment Share on other sites More sharing options...
BitchinCamaro Posted June 18, 2014 Share Posted June 18, 2014 (edited) Do you have a caliper? I can go out and measure the pin diameter on a few barrels if you need. Edited June 18, 2014 by BitchinCamaro Link to comment Share on other sites More sharing options...
ClutchUSMC Posted June 18, 2014 Share Posted June 18, 2014 Shoot me a PM, give me your info, and I'll get the right people to give you a call. Tyler McCutcheon Adams Arms Manager of Sales Operations tyler@adamsarms.net Link to comment Share on other sites More sharing options...
jhugz Posted June 19, 2014 Author Share Posted June 19, 2014 Shoot me a PM, give me your info, and I'll get the right people to give you a call. Tyler McCutcheon Adams Arms Manager of Sales Operations tyler@adamsarms.net PM sent thanks. Link to comment Share on other sites More sharing options...
hrdstmax Posted June 19, 2014 Share Posted June 19, 2014 I'm curious how this turns out, keep us posted Link to comment Share on other sites More sharing options...
jhugz Posted June 20, 2014 Author Share Posted June 20, 2014 I'm curious how this turns out, keep us posted Will do. Link to comment Share on other sites More sharing options...
Shooter115 Posted June 20, 2014 Share Posted June 20, 2014 I have a Voodoo 16.5 barrel installed on a recent build and it fit like a glove. I have a hard time imagining that the alignment pin itself is out of spec. For that to happen the hole in the receiver extension would also have to be out of spec to fit the oversize pin. This to me seems pretty unlikely. More likely is the receiver itself is cut a bit narrow. Chalk this up as a good thing as a couple swipes with a file will give you a true "custom fit". Link to comment Share on other sites More sharing options...
Therealkoop Posted June 26, 2014 Share Posted June 26, 2014 I dont know how much interference you have, but the last upper i put together didn't quite slide right in so I tapped it in with a mallet. Hammer mechanic up in this bitch. Link to comment Share on other sites More sharing options...
GreenDragon64 Posted June 26, 2014 Share Posted June 26, 2014 My 16.5" barrel was super tight on my BCM upper. Deadblow helped it get to its home. Link to comment Share on other sites More sharing options...
bigbrowndog Posted June 26, 2014 Share Posted June 26, 2014 Sounds like you forgot the chicken blood rites sacrifice!!! Trapr Link to comment Share on other sites More sharing options...
openclassterror Posted June 28, 2014 Share Posted June 28, 2014 Pin should be 0.125" (1/8 inch diameter) Spec calls for pin hole in the extension to be .1245" ( press fit). Slot in receiver is supposed to be .125" . NET FIT. Occasionally may be tight enough to need a little love-tap, but you shouldn't need the whang on it. Measure the pin. I have seen a few barrels from the less quality conscious companies that obviously had tight pin holes in the extension, and in the process of bashing the pin into the hole the top of the pin mushroomed until it wouldn't fit the receiver slot. I wouldn't expect that from a VooDoo though. Link to comment Share on other sites More sharing options...
dauntedfuture Posted June 28, 2014 Share Posted June 28, 2014 DMPS parts are not mil spec and are often out of spec. I would try filing out the upper a little. Alternatively you could but the barrel in the freezer overnight and tap it in in the morning with a rubber mallet. Link to comment Share on other sites More sharing options...
jhugz Posted June 28, 2014 Author Share Posted June 28, 2014 So it looks as if the barrels alignment pin was out of spec a bit. Adam Arms seems to think it mushroomed a bit which I agree with. They sent me a replacement and return shipment labels and had a new barrel out to me in a couple days. The new barrel fits like a glove. Thanks to Adam Arms for the excellent customer support. I understand things happen and you guys made it right. Link to comment Share on other sites More sharing options...
mpeltier Posted June 29, 2014 Share Posted June 29, 2014 DMPS parts are not mil spec and are often out of spec. I would try filing out the upper a little. Alternatively you could but the barrel in the freezer overnight and tap it in in the morning with a rubber mallet. I assume you mean DPMS? Actually you could substitute just about all but maybee 3 or 4 of the companies out there in place of DPMS and be correct in your first sentence. The vast majority of parts we use in 3-gun aren't mil-spec. So what? Jhugs, koodos to you for sticking with it and NOT hammering or filing on your parts as many were suggesting. You did it right, got to the real problem and got it solved correctly. Link to comment Share on other sites More sharing options...
dauntedfuture Posted July 1, 2014 Share Posted July 1, 2014 I'm only referring to what parts are supposed to be in spec, like the upper notch. I am well aware of what parts we use in 3G. Link to comment Share on other sites More sharing options...
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