Upgrade your AR-15 with our M4 Buttstock Kit Collapsible Mil-Spec. Designed for versatility and comfort, this kit allows you to adjust the length of pull to fit your shooting style. Whether you're a competitive shooter, a hunter, or a tactical enthusiast, our M4 Buttstock Kit delivers reliable performance and ergonomic design. INCLUDES: Collapsible Buttstock (SKU: 078000498): Crafted from durable materials, this collapsible stock provides adjustable length of pull for optimal comfort and control. Buffer Tube (SKU: 080001039): Includes Mil-Spec receiver extension/buffer tube, receiver lock plate, lock-nut/castle nut, carbine buffer and carbine buffer spring E Mfg: Brownells Bundles