shurt Posted March 30, 2017 Share Posted March 30, 2017 I purchased a New Frontier Armory 9mm upper LRBO. I've attempted to use my Lone Wolf 9mm bolt and it's too tight. Is it normal to mix these parts and they not fit properly? Now I should buy the NFA 9mm bolt to match my upper? Link to comment
JAustin316 Posted March 31, 2017 Share Posted March 31, 2017 what do you mean its too tight? Like it wont fit in the upper? Link to comment
shurt Posted April 1, 2017 Author Share Posted April 1, 2017 it will fit but not freely ... takes some pushing and I doubt it will cycle. Link to comment
Flatland Shooter Posted April 1, 2017 Share Posted April 1, 2017 (edited) If you try to insert it without the charging handle installed, is it still tight? I'm not familiar with the last round hold open design on 9mm uppers, but can it be removed to see if it is interfering with the bolt? And this is with the upper not installed on the lower, right? (If it was, I'd look at the ejector to see if it lines up with the bolt.) Edited April 1, 2017 by Flatland Shooter Link to comment
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