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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 4 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.

4 Customer Reviews

(Write a review)

by Carrie S. on 12/02/2017
"I put this in a jg bar 10. I didn’t know maple leaf had a vsr 10 one too (which I don’t know if they are the exact same but they are the same price.) The spring guide catch had some troubles fitting but nothing sanding couldn’t 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. Doesn’t tell you strength of spring but I’d say it’s as strong as an m170~m190. Other than that very strong high quality metal, shoots very hard haven’t done chrono for exact fps but I’d say it easily shoots 550+ with .2s

Imma give it a 5 because I’d 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 doesn’t tell you how strong the spring is probably m170~m190 power.
Wouldn’t 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 didn’t know it)
by Mark M. on 08/31/2020
"I put this into a CSI VSR-10 along with other Maple leaf amazing parts and I will tell you this thing is amazing. **The only drawback I had was i had to use the stock cylinder because the bolt would not fit on the cylinder.** I would most definitely buy it again.
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

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