FX MO 4 cocking lever tension

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USMCShooter1

Member
Jan 1, 2017
20
5
Florida, United States
Hello Guys,

I bought a Mk 4 FX in .25 as a retirement gift a few months ago…love the gun, super accurate of course.

I’m primarily a hunter and am extremely frustrated with the lack of cocking lever tension. If I bump it, it pops open and if the gun is elevated, it’ll fully open, causing a mag removal to prevent a double feed.

I cannot determine a way to increase the closed tension. If anyone can assist, I’d appreciate it.

S/F
Jamie
 
It’s just part of PCP life. I mentioned this exact issue in another topic not long ago. Settling in to my hunting spot only to find my cocking lever, forward or rear cocking hanging open is not even shocking anymore. With the exception of my Taipan, I just drop the mag and close it back up. Then put the mag back in after I shoot. I’ve thought about coming up with something to combat this situation but PCP hunting already has enough crap and complications associated with it. Carrying all my guns on a strap muzzle down has helped.
 
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Same experience here so I put a stack of three small neodymium magnets on the inboard face of the cocking lever. Farther forward is better but not so far that the lever won’t close to its natural position. I then placed heat shrink tubing over the magnets, cut long and slotted to wrap around the lever, which keeps the magnets in place.

My M3 had the same issue with the breech open . I think Saber Tactical makes the little bolt-on magnet block to keep the lever aft until you push it closed.
 
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I had posted some time ago regarding my fix for same by using magnets. Very small ones, stacked enough to attach to the bolt arm, yet stick to the bold pivot section. Both of which are steel, not aluminum.
Post #9....

FX - FX M3 Cocking Lever Secure

Hey, I know it's somewhere here (or on the internet), but I forgot...I need to know what is the aftermarket part that secures the cocking lever after you pull it back, like you are trying to cock it, but you leave it in the open position, and if you happen to tilt the gun down, the lever slides...
www.airgunnation.com www.airgunnation.com

mike
 
Last edited:
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Thanks Guys,
I’ll try the Neo-magnet trick and see if I can make it stay closed better. I did flip the knob upside down and that helped a lot in this morning’s hunt. I’ve got big hands, and being a retired Jarhead, my finger automatically goes above the trigger…with the knob oriented down, my knuckle bumped it nearly every time I mounted the gun…I tried adjusting my brain to stay away from it, but 30+ years of tactical muscle memory won that battle.

Jamie
 
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