M4, AR15, AR16 Metal Picatinny Rail Sling Attachment Point Mount Adapter Hunting Quick Release Attachment For Tactical Rifle Sling From Wespo, $2.69 | DHgate.Com
TAN Angled Forward Fore Grip Rifle Forend Hand Stop / Handstop For M LOK / MLOK System From Xianfeng1, $8.04 | DHgate.Com
M4, AR15, AR16 Metal Picatinny Rail Sling Attachment Point Mount Adapter Hunting Quick Release Attachment For Tactical Rifle Sling From Wespo, $2.69 | DHgate.Com