Beautiful but difficult to install - Daniel Defense Buttstock/Pistol Grip/Vertical Foregrip Combo Picatinny

These items are obviously great quality and nice looking. But the stock is really difficult to install. Insturctions are fairly clear, but the side tabs that lets you slide it over the tube are very stiff and difficult to depress. I'm still trying to do with without using a tool that might leave a mark. But if you want this propriety Daniel Defense color, this is your only option. No other dark brown really matches the DD upper in what they call "Mil-spec+" (I know, weird name for a color).