This foregrip is comfortable, and a good shape. It's fairly soft, and light weight. I also appreciate the side panels for pressure switches (for lasers and or lights). it also has a compartment on the bottom for small things such as mini watch batteries for lasers, or in my case, a lens cloth (for my scope and goggles).
As far as fitting against the magwell goes, well i have the M416 design, where the RIS sits flush with the upper reciever. This thing when all the way back is about an eighth of an inch too far back, meaning it won't fit. The second farthest back position, leaves a space about 3/8ths of an inch apart from the mag well. This is due to the bolt fasteners placement. They needed to have it only 1/8th more forward.
Regardless, i keep it about 3 inches from my magwell as a stand alone foregrip. I have long arms so i need it farther forward for it to be more natural and comfortable.
Ultimately that one flaw might be a red flag for some, but personally i use it differently. SO it's not perfect considering what it's made for, but still a great grip. Also i like the color. I have my black gun (not camo at all) with a lot of Od, tan, and foliage on it to make it at least "more" camo. This helps with that.
bottom compartment (handy for objects roughly 1 cubic inch)
removable side panels for pressure switches
Bolt should've been a little more forward or backwards for a flush fit to mag wells (or at least on M416's)