Magpul Stock CTR M4 Carbine, Commercial
CTR M4 Carbine Collapsible Buttstock / Commercial Model
The patent-pending Magpul CTR (Compact / Type Restricted Commercial Model) is a drop-in replacement butt stock for carbines using commercial 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 Commercial Model includes an extended 0.55" rubber butt-pad to provide positive shoulder purchase and accommodates longer slant-back extension tubes.
Note: There are two basic types of M4 Carbine Receiver Extensions (buffer tubes): Mil-Spec and Commercial. If you have a Mil-Spec extension on your rifle, make sure to order the Military CTR (MAG310). For help identifying which extension is on your rifle, please contact your rifle manufacturer.
Made in the USA
- Mounts on Commercial 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
- 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
Extended Rubber Butt-Pad, 0.55" (Removable)
- Rubber Butt-Pad, 0.30"
- Cheek Risers (0.25", 0.50", 0.75", 1.5" for NON-M16 applications)
* Friction lock performance may vary depending on the receiver extension's dimensional tolerances.
- CTR Commercial Carbine Stock (w/ Rubber Butt-Pad, 0.55")
- Weight, Stock Body: 0.57 lb.
- Weight, w/ Receiver Extension: 0.98 lb.
- Length, Stock Body: 7.15 in.
- LOP Adjustment Range: 3.8 in.
- LOP, M4 Collapsed: 10.4 in.
- LOP, M4 Extended: 14.5 in.
** Removing Extended Rubber Butt-Pad subtracts 0.55 in. LOP and 0.12 lb. Optional Standard Rubber Butt-Pad, 0.30" subtracts 0.25 in. LOP and 0.02 lb. vs. extended pad but may only be used with standard-length (flat-back) M4 Carbine Receiver Extensions only. Butt-pads are compatible with UBR, ACS, CTR, and MOE, carbine stocks.
***Specifications based on extended-length (slant-back) M4 Carbine Receiver Extension and may vary depending on tube specifications.