first 308 build

[dprice38444]

have built numerous ar-15's in the past with no issues.this one is a hoot

using si defense 308 set hk mags.aero presicion melonited bolt carrier assembly,criterion chrome lined 16 inch bbl,tac con trigger.assembly went smoothly.inserted bolt carrier into rear of upper,lugs swiveled into place,will not swivel out of place in barrel.cannot with draw the bolt carrier.any suggestions so that i won't tear up the aluminum nibx upper?

[unforgiven]

If i'm reading this right the BCG is locked into place and 3 men and a boy can't pull the charging handle back.....If you are running an adj. stock.Close the stock,unlatch the charging handle.Strike the buttstock on something solid [get a small piece of wood put it on the floor]and slam the buttstock to the floor while holding the latch open and pulling rearward on charging handle.Happened to me with the Nickel boron BCG.Took 3 stikes for it to open.The rifle should not have a live round in it.......

[planeflyer21]

Spec AR15 = legos

308AR = 

 

[dprice38444]

after much procrastination.i studied unforgivens suggestion and determined that if the bolt face was not in spec,his suggestion would put me right back in the same situation if i slammed it on a surface,plus,might break some expensive parts. what i wound up doing is using one of those harbor freight type body pullers that i had in the garage,(1/4 20 threaded tip)went to ace hardware and got a 5 1/2 inch 1/4 20 bolt.put bolt in vise 1/2 inch or so sticking out,and beat the bolt head until approx 45 degrees. then took bench grinder and ground the bolt sides flat to the bolt shank,the upward bent tip, fit right into the carrier slot.popped stripped upper into barrel vise,3 shots with the slide hammer,popped apart.

[jtallen83]

Nice work! That sounds patent worthy, you could charge good money for cleaned up version. Make them for both 308 and 556.

[dprice38444]

the si defense upper had been nibx'd,didn't want to mess it up.had a design for a puller,but no more access to machine shop anymore.this was cheap and simple.barely a mark on the carrier

[survivalshop]

  Mortering the stock ( as described by Unforgiven )would have been faster , but you got er done  . A lot of new AR rifles have this issue at first , even factory rifles .  Most of the calls I get , there is a live round in the chamber , I tell them to keep their fingers away from the Trigger & go outside or to the range ( if they are not there already ) .

 

[dprice38444]

bought an ace hammer buttstock around xmas for around 225.00,now up to 362.00.didn't want to mess it up.my luck,woulda broke something.

[blue109]

If you break a $225 stock...you may have paid too much ?

[dprice38444]

it's built like a tank,all ball bearing slides,adjustable cheek rest made of aluminum.

http://riflestocks.com/cgi-bin/sc/productsearch.cgi?storeid=*10ca84530206a4909dfb&search_field=hammer&search_submit.x=4&search_submit.y=7

[DNP]

For $25 more you could have got one that was ALL aluminum. 

http://www.jlbillet.com/jl-billet-modular-billet-stock-mbs/

[blue109]

I notice nobody lists the weight of the ACE stock. I'm curious. It looks pretty beastly.

[dprice38444]

it is. all aluminum,including cheek piece.

[dprice38444]

ok,finally finished it.

ace hammer buttstock,si defence 308ar hk receivers,criterion 16 inch chrome lined match grade barrel,adjustable gas block,midwest industries forend,aero precision melonited bolt carrier,wmd nitrided the upper,and tac-con rock and roll trigger groop.  aac sr-7 can extra.

[unforgiven]

Good job on that rifle brother ,how does it shoot ?

[dprice38444]

dunno yet. still waiting for a chance to get to range,wanna try out the rock and roll feature.

https://tacconusa.com/tac-con-in-action/ trigger group video