cw_mi 1 Posted November 11, 2013 Report Share Posted November 11, 2013 I've been collecting parts for this build for the past 6 months. Finally got everything and got it together. Found some time to shoot it and try to get it sighted in. Well put 50 rounds thru it and not a one cycled properly. It's an XN, and i was shooting 1350 fps rounds. It looked like the bolt was coming half way back. I'm hoping the lighter spring will take care of it. Any suggestions? Quote Link to post Share on other sites
Goodwin 1 Posted November 11, 2013 Report Share Posted November 11, 2013 had the same problem get read of your federal /winchester ammo and go with remmington ammo and get yourself a gas booster bushing that should solve most of your problem!! and will some one take a look at my bolt and tell me if it is #### please thankyou Quote Link to post Share on other sites
gunfun 3,931 Posted November 11, 2013 Report Share Posted November 11, 2013 Since you've bought an expensive fire bird receiver, I am sure you could drop a line to the guy who made it, jim lambert. I'd be surprised if he didn't give you a lot of customer support. On this forum his screen name is gentleman Jim. Anubis works for firebird too. They have their own subsection too. Quote Link to post Share on other sites
YOT 3,743 Posted November 11, 2013 Report Share Posted November 11, 2013 I would also add that one should always be concerned with functionality before form. Reliability should always take priority over aesthetics. Nice looking gun you have, there. 1 Quote Link to post Share on other sites
ShadowFire 220 Posted November 11, 2013 Report Share Posted November 11, 2013 had the same problem get read of your federal /winchester ammo and go with remmington ammo and get yourself a gas booster bushing that should solve most of your problem!! and will some one take a look at my bolt and tell me if it is #### please thankyou Really? I shot the shit out of my XN with Super-X 2 3/4" 00 buck, it loved it. I'm currently shooting the hell out of some 00 PMC "High Velocity" 2 3/4" now. And I'm running bone stock at the moment. The MKA is addicting. lol Quote Link to post Share on other sites
cw_mi 1 Posted November 12, 2013 Author Report Share Posted November 12, 2013 Gunfun, I guess i didn't think the FB lower would have anything yo do with the lack of the gun cycling. The gun still has the factory gas system. Everything worked fine other than the slow cycling. Yeoldetool, Thanks. I went with the complete lower just because it was an easy way to make 922 compliant. Quote Link to post Share on other sites
gunfun 3,931 Posted November 12, 2013 Report Share Posted November 12, 2013 I was thinking more of the total package, parts conflicts or break in. I didn't think the problem was likely to be the lower's fault, I thought Jim knows the subject inside and out and would probably want to help his customers have a good experience. He would know any of the parts conflicts and the quick places to check for tuning problems. - I know a lot of people start with a booster in those then remove it after the gun wears in. It's better advertising for him to have you at the range with a gun that looks awesome and runs awesome, than with his logo catching eyes as you rack out jams and curse the gun. As far as that goes, the image has little to do with the actual cause. Quote Link to post Share on other sites
compshootfl 40 Posted November 12, 2013 Report Share Posted November 12, 2013 I would try some different ammo types, keep shooting it to give it more break in time. Quote Link to post Share on other sites
ShadowFire 220 Posted November 12, 2013 Report Share Posted November 12, 2013 Yeah they do say on their website that their lower does need too be fitted to the upper. So bare that in mind. Quote Link to post Share on other sites
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