A fix for your wobbly Robarms XCR

[c3pppo]

Every XCR I've seen has some play between the upper and lower halves, just enough to annoy me. The fix is simple.

Cut a piece of thick paper, 1/4" X 1". I used a piece of an American Eagle ammo package.

Hinge open the XCR. Look at the front of the lower, right behind the hinge and in front of the mag well. You will see a flat spot. Place the piece of paper on that spot and close the upper. The play will be gone.

For a more permanent solution you could either fix the paper in place ( I used some thin double-sided Tesa tape ) or for the retentive types, a brass shim would likely work.

 

[Throttle_monkey1]

Doesn't bother me. ARs have the play too.

 

[c3pppo]

So, I'm thinking this thread doesn't apply to you then. Thanks for playing tho'.

 

[pimlott]

The H&K Mr223 is tight, but if it looses up I will keep that in mind.

 

[Hunter1970]

Good tip, I'll have to give it a try.

 

[carbonrod]

Thanks for playing tho'.

Can I play?

Do any of these 2-part guns not loosen up with use? My Ar-15 was so tight from the factory that it was almost hard to get the pins out. Now, with several K through the pipe, they wobble.

I would not be sure that a piece of paper would stand up to that use. Up to you though.

 

[NavyCuda]

There is a thread about this on one of the XCR forums, thanking their Canadian friends for hockey tape. A strip or two is supposed to clear the wobbles right up.

 

[hbean]

place a couple drop of epoxy to shim up the pieces is a more permanent solution