7075 aluminum mil-spec receiver extension tubes accept M4-style adjustable carbine buttstock. Six positions. Machined from lightweight aluminum extrusion then NiB-X nickel boron coated.
STOCK NOTICE: This item is NOT marked "In Stock". We will contact you within 12-24 hours by email if your order is on backorder with our distributor and will take longer than the 5-7 business days it takes us to ship out. Please do not order if you need this item shipped immediately.