okay so i have a related issue. I bought a PSS2 170 spring for my L96 as well as the modify, springguide 7mm, piston, piston head and a cylinder head. However when i set up all the pieces and tried to cock it, something inside felt like it was grinding and it wouldent cock. However if i use the stock spring guide, it seems to work perfectly... anyone know what the issue is?
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