Magpul CTR™ M4 Carbine Collapsible Buttstock – Military Model
The patent-pending Magpul® CTR™ (Compact / Type Restricted - Military Model) is a drop-in replacement butt stock for carbines using mil-spec receiver extension tubes. Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation. The extra-power lock mechanism uses a premium chrome-silicon spring to avert auto-collapse failure and maintains strength by resisting spring relaxation. The CTR™ also features a supplemental friction lock system that eliminates wobble* for enhanced weapon stability and accuracy. The Military Model includes a standard 0.30” rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

Note: There are two basic types of M4 Carbine Receiver Extensions (buffer tubes): Mil-Spec and Commercial. If you have a Commercial extension on your rifle, make sure to order the Commercial CTR™ (MAG311). If you have one of the uncommon military tubes with an extended slant-back, please contact Magpul for an Extended 0.55” Rubber Butt-Pad (sold separately). For help identifying which extension is on your riflewww.magpul.com/tech/ctr.html

Features
» Mounts on Military Carbine Receiver Extension tube (Not included)
» Premium chrome-silicon spring provides positive locking and long service life
» Supplemental friction lock eliminates accuracy robbing wobble
» Sloping cheek weld combines a slim profile with user comfort
» Shielded release latch prevents snagging and accidental operation
» Side mounting slots accept optional cheek risers for NON-AR15 / M16 applications
» Sling Mounts
        º Rear - Push-button QD sling mounts accommodate up to 1.5” swivels (Ambidextrous)
        º Rear / Bottom - 1.25” Sling loops
        º Toe - Lanyard hole for custom para-cord rigs
 
Included Accessories
» Rubber Butt-Pad, 0.30” (Removable)

Specifications
» CTR™ Military Carbine Stock (w/ Butt Cap)
        º Weight, Stock Body: 0.48 lb.
        º Weight, w/ Receiver Extension: 0.79 lb.
        º Length, Stock Body: 6.60 in.
        º LOP Adjustment Range: 3.3 in.
        º LOP, M4 Collapsed: 10.1 in.
        º LOP, M4 Extended: 13.4 in.