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2/12/2014 9:20:50 PM EDT
Ok, so here's the scenario: I've got my lower all but completely assembled, just have to put the buffer tube on. So I put the takedown detent and spring in the hole that they go in, get everything situated on the buffer tube (castle nut and base plate), have the buffer retainer and spring where they go. Start screwing in the buffer tube, all's well; then, with one turn left to go, I'm having a terrible time with the detent spring. It's all in the way and causing me grief, because there's not much room between the lower reciever and the base plate at this point.

When it's all said and done, I got it all together, looks pretty, so on and so forth. My question is how can this go smoother? It's not like it was impossible to do, but I don't think most people are having to hold that spring in with a razor blade during assembly, are they? Gonna feel like a dummy if the castle nut could have been screwed back further to allow for more room or something (didn't seem like it though). It's pestered my brain enough to risk looking like a moron to ask this question and see if anyone can lend me their suggestions and insights. Any input is greatly appreciated
2/12/2014 9:25:09 PM EDT
[#1]
Yeah, screw the castle nut all the way to the back of the extension before installing it on the receiver.

Alternatively, you could drill and tap the takedown pin spring hole for a set screw and shorten the spring appropriately, and use that to hold the spring.
2/12/2014 9:38:25 PM EDT
[#2]
like above said. unscrew the castle nut till it wont go anymore. if you go far enough out, the plate wont even touch the spring till about the last turn.
2/12/2014 10:23:41 PM EDT
[#3]
Quote History
Quoted:
Yeah, screw the castle nut all the way to the back of the extension before installing it on the receiver.

Alternatively, you could drill and tap the takedown pin spring hole for a set screw and shorten the spring appropriately, and use that to hold the spring.
View Quote


I recently did this mod for a buddy of mine. It only took a few minutes and IMO is worthwhile.

http://www.ar15.com/forums/t_3_118/395777_Simple_fix_for_the_rear_takedown_detent_spring_blues____.html
2/13/2014 7:25:09 AM EDT
[#4]
Dang, guess that's what I get for being overly careful with it . Oh well, at least I know for next time (I'm sure there's going to be a next time). Might have to look into the set screw route also thanks for the help guys
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