Cheap backplates do not stake well. Those with rough edges found on lesser brand ARs are shit and should be avoided.
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Cheap backplates do not stake well. Those with rough edges found on lesser brand ARs are shit and should be avoided.
Regardless of mil-spec or commercial, do all tubes have the same inner diameter?
Don't know if this has been asked, but can a commercial tube be replaced with a mil spec tube?
My Bushmater M4 superlight (circa 2004) had its unstaked castle-nut spinning
off before I even shot the first round through it. Within about 10min of handling my new weapon (also my first AR purchase) I noticed the castle-nut spinning down the threads. Wish I had found this site before that purchase.:mad:
Not to worry, that M4forgery no longer resides with me:)
This is true. Those with rough edges can wear on the edges over time where it mates up to the receiver allowing looseness.
Another thing that I have not seen mention, although I could have missed it, is that Milspec receiver extensions,(Colt) are forged out of a solid hunk of aluminum and machined down. There is a good bit of material waste in this process, but it is necessary inorder for the receiver extension to pass drop tests.
Most commercial tubes are not.
Would you also suggest it mandatory for rifle length REs to be replaced if they're "commercial?" I have an A2 kit which was $75 total and (thanks to Bill Alexander) I recently looked at the end plate which was welded on, although the grinding was very nicely done. SAW has forged rifle REs for around $50, and cast for maybe $30. I assume either would be mil-spec, and better than the one I have...?
K.L. Davis:
Thanks for this post.
Consider giving me the "Dingbat" of the week award, but I absolutely, positively, could not get any stocks to fit my S&W, without being wobbly. I had assumed that the 'tube was Comm. After Mr. Davis' post, I check Rob's chart again, and realised that:
1) I had exhibited and obscene lack of attention to detail
2) The S&W definitely does NOT have a comm tube.
This thread should be stickied for bozos like me.