Collapsible stock BLOWS. I bought my Benelli M4 NIB with collapsible stock, I'm a lefty....every time shooting the stock would unlock from fully extended position, weird ah. Yes, it looks cool with stock collapsed, I know.
I ordered a factory Benelli OEM solid M4 stock from Brownells for $200 USD and installed it, sold the collapsible stock on the EE for $200 CDN shipped if I remember correctly....probably 6 years ago.
The solid stock is AMAZING on the Benelli M4, damn I miss that Italian master piece. 50 yard head shots with 1oz rifled slugs bench rest, all 5 slugs dead centre on single piece of white writing paper, those military peep sights/ghost ring sights are amazing.
Keep the solid stock if you like it, but it's yours so whatever you like better. I think it cause I'm a lefty maybe the stock would unlock while shooting.....never happened to any of my buddies who were right handed.