CTR Carbine StockThe 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).
Features
Mounts on Military Carbine Receiver Extension tube (Not included)
Premium chrome-silicon lock 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
Compatible with Single-Point® sling mounts
Sling Mounts
Rear - Push-button QD sling mounts accommodate up to 1.5” swivels (Ambidextrous)
Rear / Bottom - 1.25” Sling loops
Toe - Lanyard hole for custom para-cord rigs
Made in the USA
Included Accessories**
Rubber Butt-Pad, 0.30” (Removable)
Optional Accessories**
Extended Rubber Butt-Pad, 0.55”
Cheek Risers (0.25”, 0.50”, 0.75”, 1.5”for NON-M16 applications)
Specifications***
CTR™ Military Carbine Stock (w/ Butt Cap)
Weight, Stock Body: 0.48 lb.
Weight, w/ Receiver Extension: 0.79 lb.
Length, Stock Body: 6.60 in.
LOP Adjustment Range: 3.3 in.
LOP, M4 Collapsed: 10.1 in.
LOP, M4 Extended: 13.4 in.
* Friction lock performance may vary depending on the receiver extension’s dimensional tolerances.
** Mounting Standard Rubber Butt-Pad adds 0.30 in. LOP and 0.09 lb. Optional Extended Rubber Butt-Pad, 0.55” adds 0.25 in. LOP and 0.02 lb. vs. standard pad and may be used with either extended-length (slant-back) or standard-length (flat-back) M4 Carbine Receiver Extensions. Butt-pads are compatible with UBR™, ACS™, CTR™ and MOE™ carbine stocks.
*** Specifications based on standard-length (flat-back) M4 Carbine Receiver Extension and may vary depending on tube specifications.
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