Wasn’t originally going to sell this. But with the right price i may consider it. I have an S&T M1903A3 fully upgraded and modified to replicate the sniper variant M1903A4. Took me 2 years to figure out how to make this a more skirmish-able weapon. Upgraded parts includes: -thicker wall cylinder for durability -metal piston -metal spring guide -Precision inner barrel -thicker bucking for hop up -SP120 laylax springs -real rifle scope made by Savage-suwa. (Made in Japan) Chrono gun at 445-448 fps with .20g bb Before hop up upgrade at .20g bb hop up had to be about half way to get bb to fly straight. Now with stronger bucking hop is adjusted all the way down and .20g bb still shoots straight. Never had the opportunity to see how far up the hop up needs to be adjusted for .40 or .46g bb. If you want more pictures or have questions feel free to message me.