MAGPUL 1LX50 STR® Carbine Stock – Mil-Spec.


The Magpul STR (Storage/Type Restricted) Stock is a drop-in replacement buttstock for AR-15/M4 carbines using Mil-Spec receiver extensions. The STR features an improved cheek weld and a compact, reinforced polymer A-frame design. Two water resistant battery tubes each store (2) CR123A lithium or (2) AA batteries. A shielded operation lever and friction locking system prevent accidental operation and minimize excessive stock movement for enhanced weapon stability and accuracy. The STR incorporates two sling loops, a reversible push-button QD sling mount, and a replaceable 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.


  • Mil-Spec carbine receiver extension compatible
  • Battery storage tubes
  • Friction lock
  • Chrome silicon lock spring
  • Sloping cheek weld
  • Shielded release latch
  • Replaceable 0.30" rubber buttpad
  • Compatible with Magpul ASAP, ASAP QD, and other receiver-mount sling attachments
  • Reversible Type 1 sling mount fits up to 1.5" push-button QD swivels (swivel not included)
  • Rear/Bottom – 1.25" sling loops
  • Length: 7.3”
  • Width: 2.6”
  • Length of pull adjustment range: 3.3”
  • Length of pull - Collapsed: ~10.9”
  • Length of pull - Extended: ~14.2”
  • Weight: 12.3 oz

Collections: Tactical Gear Plate Carriers



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