rccola 0 Posted August 11, 2008 Report Share Posted August 11, 2008 I've got the AKRBC from Ace for my .308 - I cut and filed down the top rear tang, but the block still won't slot in. It appears to be hanging up on the trunion rivets. Anyone here know if this a normal problem? Not sure if I should clearance the rivets or the block or if there's something obvious I'm missing. Quote Link to post Share on other sites
nsnate02 32 Posted August 11, 2008 Report Share Posted August 11, 2008 I've got the AKRBC from Ace for my .308 - I cut and filed down the top rear tang, but the block still won't slot in. It appears to be hanging up on the trunion rivets. Anyone here know if this a normal problem? Not sure if I should clearance the rivets or the block or if there's something obvious I'm missing. I had to grind down the arms on mine to clear the rivets. Quote Link to post Share on other sites
rccola 0 Posted August 11, 2008 Author Report Share Posted August 11, 2008 I've got the AKRBC from Ace for my .308 - I cut and filed down the top rear tang, but the block still won't slot in. It appears to be hanging up on the trunion rivets. Anyone here know if this a normal problem? Not sure if I should clearance the rivets or the block or if there's something obvious I'm missing. I had to grind down the arms on mine to clear the rivets. Excellent, thanks! Quote Link to post Share on other sites
moxie1c 3 Posted August 11, 2008 Report Share Posted August 11, 2008 Same here. File, test-fit and file again. No worries RC Quote Link to post Share on other sites
rangerdavid 6 Posted August 12, 2008 Report Share Posted August 12, 2008 i don't think the ACE internal block is intended to be an exact plug 'n play on every rifle. I had to mod mine too, and have heard of lots of folks who have. Regardless, once in, it fits and works like a charm!! Quote Link to post Share on other sites
Thor's Hammer 33 Posted August 16, 2008 Report Share Posted August 16, 2008 (edited) Some good advice I got from this forum on that job was to file to a slight taper when fitting for the rear trunnion clearance. Get it so it will hand fit to within a 1/4" of the receiver, place some duck tape over back side of the block to protect the finish, then give it a few smacks with a rubber mallet to seat it firmly in place. When I was test fitting I put some black ink marks on the two freshly filed edges with a sharpie so that when I pulled it back out I could try to get a disturbed condition on both marks to ensure I was getting even contact on both sides. And don't forget to pre-install the small nut that goes into the T-slot that is used for the top mount bolt before you pound it in, or you'll just end up cursing, and then pounding it back out again. I even went a bit farther and drilled and cut threads in the old trigger pin holes (Saiga appendix) and installed (4) 10-24 button head allen screws into the block as well. It took a while filing and fitting, fitting and filing, but I am glad to say my Ace folder does not wiggle. Lastly, when I got my block from Ace they included a common allen head screw for the top mount. That was incorrect. It needs to be a flat head allen screw or your rear recoil spring mount may catch that incorrect screw head. Mine did. Edited August 16, 2008 by Thor's Hammer Quote Link to post Share on other sites
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