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Maple Leaf Cylinder & Trigger Upgrade Set for FN SPR / VFC M40 Airsoft Sniper Rifles

ID: 51582 (RA-Agent-Air-ML-004)
Maple Leaf (AST)859188515826RA-Agent-air-ml-00451582
4.3 stars, based on 3 reviews
Maple Leaf Cylinder & Trigger Upgrade Set for FN SPR / VFC M40 Airsoft Sniper Rifles
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Maple Leaf (AST)


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  • Durable steel construction
  • Newly designed spring guide lowers resistance to offer smoother cycling
  • Reinforced bolt handle attachment point
  • CNC machined steel trigger sear upgrade kit
Compatibility: For FN SPR, VFC M40 and other compatible Airsoft Spring Sniper Rifles
Material: Steel, Aluminum
Package Includes: Steel Cylinder, Cylinder Head, Spring Guide, High Power Spring, Trigger Sear Kit

Manufacturer: Maple Leaf

About Maple Leaf (AST)

Maple Leaf manufactures high quality upgrade parts and Airsoft accessories.

3 Customer Reviews

(Write a review)

by Carrie S. on 12/02/2017
"I put this in a jg bar 10. I didnít know maple leaf had a vsr 10 one too (which I donít know if they are the exact same but they are the same price.) The spring guide catch had some troubles fitting but nothing sanding couldnít fix. I also had to take the spring guide spring and piston out to line the back of the spring guide up with the spring guide catch. Doesnít tell you strength of spring but Iíd say itís as strong as an m170~m190. Other than that very strong high quality metal, shoots very hard havenít done chrono for exact fps but Iíd say it easily shoots 550+ with .2s

Imma give it a 5 because Iíd say if you got the vsr 10 version it would fit with way less trouble.

Powerful spring
Really high quality metal
Will defiantly last a long time with proper cleaning and lubrication

Obviously doesnít tell you how strong the spring is probably m170~m190 power.
Wouldnít recommend getting it for vsr 10 snipers it will work but will need to be sanded down slightly.(there is a vsr 10 version but I didnít know it)
by charles m. on 06/09/2018
"It works in a Well MB03 (vsr-10) but the bolt handle will not fit on that cylinder, i had to sand it to make it fit. It worked perfectly after this modification
by Daniel W. on 02/04/2018
"Nice set up here. Very easy to assemble the reinforced sear.

Put this on a Classic Army Herstal FN SPR VSR10 clone

Keep in mind that the piston that comes with the cylinder is for a 45 degree trigger. Hence why there is a sear upgrade in the kit. If you want to use the maple leaf drop in 90 degree trigger, you will need a 90 degree cylinder.

When reassembling the sear, remember to use blue loc-tite for the screws. I did not do this and after a dayís play the screws backed out.

Iím not 100% sure what the spring rating is, but I cronoed at 477 fps with .23 bbs. Thatís perfect for my field

Only issue I had with this set up is that the spring catch guide would not set because the spring had the spring guide pressed up tight to the back of the cylinder. It would rest on top of the spring guide and be good for 1 cycle before falling out. The only way I could get it to set was take apart the cylinder, slide the spring guide catch into place, then slide the guide, spring, and cylinder into place before screwing on the piston tube.

Other than that itís a nice product. Gave it 4 stars because of the extra steps needed to install the spring guide.

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