MAGPUL Stock CTR Collapsible AR-15 Carbine

The CTR (Compact Type Restricted) polymer buttstock features a unique design with a 3-1/2″ length of pull adjustment. Requires the use of a mil-spec carbine-length extension tube, buffer and spring (sold separately). The stock also features a friction lock system which eliminates play and creates a solid link between the stock and the extension tube.

Technical Information:

Buffer tubes come either as Mil-Spec or Commercial diameter. The Mil-Spec buffer tube is 1.148″ in diameter while the Commercial buffer tube is 1.168″ in diameter. The standard is Mil-Spec and Commercial stocks and buffer tubes are usually described as such.