Gunsmithing Mcmillan A-5 Adjustable Cheek Issue

[Hook Creek]

Anyone ever have any issues with there Mcmillan adjustment knobs coming loose? Loving the stock, but after tightening then taking a few shots, it will come loose and wobble around. Don't matter how tight I make it, it will come loose after 2 or three shots with my 308 Winchester

 

[427Cobra]

Put a spacer under the cheek piece, I used washers at first, then I made a spacer out of wood the same thickness.

 

[Hook Creek]

Put a spacer under the cheek piece, I used washers at first, then I made a spacer out of wood the same thickness.

Great Idea, thanks for the tip.

 

[kjoens]

I had the same problem with mine (saddle cheek rest). I tightened mine with a small pair of channel locks. Every time I trie to do it finger tight it always loosened up. Haven't had a problem since.

KJ

 

[Hook Creek]

Didn't want to over tighten anything. Going to try putting something in between there. Sucks that it wont stay finger tight though.

 

[IKE]

Of all the decisions made in building my custom bolt-gun, the thumbwheel adjustable cheekpiece is the only thing I regret. The thumbscrews come loose like yours and having to wheel the cheekpiece down every time I clean drives me crazy. Unfortunately, because it's molded in, there is no way to change it without ruining the stock. In a recent match, the thumbscrews wouldn't last a single 10 shot stage of fire without working loose. I might have been able to over look this one imperfection except for the fact that it is in a place that is crucial to shooter/rifle interaction (the cheek weld). It annoys me so much that I've started saving for a new stock.

 

[stockdoc]

Guys, search stockdoc on the gunsmithing section and check it out. You can have KMW loggerhead installed in your stocks.

 

[wvlapua]

Scorehigh gunsmithing makes new hardware to fix the issue.
Score High Gunsmithing

 

[308Gunner]

I have an A5 that I put a saddle cheek piece on and I was having same problem I put rubber washers under nuts and it worked great. On my A5 adjustable I have not had that problem and mine are just finger tight, shooting 308 on both guns.

 

[Brain]

Get rid of the giant "locking" knobs.

The fix costs less than $5.00 and comes in the form of socket set screws with either cone points or half dog points (your choice as to how aggressive they will bite into the posts). I've never had a thumbwheel adj. cheek come loose after ditching the knobs and replacing them with set screws.

 

[Hook Creek]

Awesome ideas

 

[Sonic Crack]

IMO any of the MCM adjustable cheek hardware is sub par. Saddle type: thumb screws come loose/ wont hold, The aluminum bar that the thumb screws get smashed into gets all burred up and can make for problems adjusting or removing the saddle. Thumbwheel/Clamp bar: more thumb screws to come loose, Hardware just bolted to the bottom of the cheek piece (instead of inlet and flush) looks cheap and non professional. They all lack a "clean" look.

 

[427Cobra]

My spacer solution is cheap, and highly effective, there is no reason to spend a ton of money for a simple fix, I will never buy another McM stock with the thumb screw setup, but I'm not replacing what I got over it.

 

[pappy42]

My spacer solution is cheap, and highly effective, there is no reason to spend a ton of money for a simple fix, I will never buy another McM stock with the thumb screw setup, but I'm not replacing what I got over it.

This is a good tip, thanks.