overkill8000 1 Posted July 23, 2015 Report Share Posted July 23, 2015 (edited) I bought the gun used, and have had it cerakoted. How can I tell what model it is? i've seen people say xn as a model. Also what the good and bad news of the models. Edited January 11, 2016 by Juggernaut removed photo as per posters request. Quote Link to post Share on other sites
Border Dave 1 Posted July 24, 2015 Report Share Posted July 24, 2015 (edited) That looks like the original, pre-XN model. You've got what looks like the Firebird Precision Tac-12 billet aluminum lower receiver, 10-round magazine, and quad rail handguard with gas system (not sure of the manufacturer). Do you have the non-reciprocating charging handle on the left side? Edited July 25, 2015 by Border Dave Quote Link to post Share on other sites
overkill8000 1 Posted July 24, 2015 Author Report Share Posted July 24, 2015 Is the pre xn model bad??? Quote Link to post Share on other sites
Flatland Shooter 22 Posted July 24, 2015 Report Share Posted July 24, 2015 Not necessarily bad, its just some of the parts are not available should they break. Primary parts of concern are the drive block, bolt and locking bolt. The folks at Tooth and Nail have run some pre-XN guns for many thousands of rounds without problems. Others did not get as good of mileage. Some of the broken guns may have been just a matter of bad luck. Most may have been the result of using too many hot loads. Mine has well over 3000 rds of mostly light loads without problems. But just in case, I have a spare MKA 1919 in the back of the safe to be used as a parts gun if necessary. My problem is they are flat out fun to shoot, therefore the round count will continue to climb. Quote Link to post Share on other sites
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