I recently built my M4 and needed to know if there should be any barrel movement? It's a 16"in carbine length barrel with a YHM diamond series rifle length free-float rail system.
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I recently built my M4 and needed to know if there should be any barrel movement? It's a 16"in carbine length barrel with a YHM diamond series rifle length free-float rail system.
never push a wrench...
Im assuming you are holding the handguard and bending the barrel?
Is the handguard becoming off center making the barrel appear to move?
Did you torque the barrel nut to spec?
No the barrel should NOT move.
Short answer. NO! The barrel should not move.
America is not at war... The U.S. Military is at war... America is at the mall.
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Home build.
Doesn't know if the barrel should move.
Anyone else see what wrong here?
Short answer to the OP:
No.
Note to new members and AR owners:
If you don't understand how the rifle operates, and how parts work with each other to make a functional rifle, you probably shouldn't be building one.
O.o
That's definitely not supposed to move.. the barrel shouldn't flex either since you're using a freefloat rail system.
Barrels do flex, some more than others due to profile and material used. I'm guessing the OP means he can deflect the barrel in relation to the FF tube. As long as it returns to exactly where it started and doesn't have any free play, it's probably fine - ASSUMING the barrel is installed right and the barrel nut is torqued properly.
Agreed with those above that if the OP doesn't already know the answer, he shouldn't be building rifles yet.
I can take the barrel and the MFR tube on my DDM4V7 and flex the two towards each other just using thumb and index finger strength. It springs right back. I have no clue if the barrel or the tube is flexing, but it's not loose.
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