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M1 Garand Question?

jimbowtwo
I just received a rack grade Garand from the CMP. It's a nice piece,Springfield receiver 364XXXX,12/65 barrel. It's all reparkerized with a birch stock. I noticed that there is alot off clearance where the barrel passes through the gas cylinder which makes the front site loose on the barrel. Is this normal for an old armory overhauled Garand? What can be done to repair this?
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4 comments

Date Votes
  • Pinhead
    I had the same problem with a garand that I received from CMP. The solution is simple. Have a gunsmith that knows what he is doing to "peen" the gas cylinder to properly mate the splines on the gas cylinder to the grooves in the barrel -- OR buy a new gas cylinder. This is what holds sight and gas cylinder in a tight fit. Excessive removing and replacing the gas cylinder is usually the cause of the problem. This was a common repair for service armorer's and was not that unusual.
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  • MIKE WISKEY
    the easyest way is to try several gas cylinder locks untill you find one that will tighten the gas cylinder snugly to the bottom of the barrel splines and index correctly at the same time. or you can slowly remove metal from the receiver side of your gas cylinder lock until the gas cylinder is tight and the lock indexes correctly.
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  • GaBob
    Gently peening the splines will tighten it. Avoid unnecessary disassembly afterwards

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  • firstharmonic
    The gas cylinder must be tight to have the rifle shoot with accuracy. If there is any wobble at all, it will be exaggerated at the front sight. Think of a sailboat. Picture the deck pitching just a little bit, then think about how the tip of the mast is swinging around. That mast tip is the top of the front sight of your M1.

    Some maintain that, as a rifle is shot, the fouling will tighten up the cylinder. Maybe so. I personally believe in peening the slots in the barrel to tighten the cylinder. Remove the op-rod and the gas cylinder. Lay a 7/16 or 1/2 inch socket in one of the three grooves in the barrel, then lightly tap the side of the socket with a hammer several times to peen over the edges of the groove a tiny bit. Make sure the barrel is well supported while doing this. Repeat for the other two grooves. Now, re-install the gas cylinder. It may be necessary to use a block of wood against the bayonet lug, tapped with a hammer, to slide the gas cylinder back on. That cylinder will be tight. And your rifle will be more accurate.

    Good luck. It isn't difficult.


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