Can you compare to the Troy TRX Alpha system? I've got one on my AR and love it, esp since you can buy Troy's squid rubber grommets to make a good grip without a forward vertical grip.
Springfield Armory M1A 22" barrel in SAGE EBR Mod 0 stock
Dan Wesson CCO | S&W Model 58 blued | S&W Model 29 blued
Springfield 1954 M1 Garand | S&W M&P 15 VTAC 2