MPN: 0010530037 / 0010530039


  • Precision rifle, flat bottom design for stability
  • One-piece free float design
  • M-LOK slots at the 3, 6, and 9 O'clock positions for M-LOK accessories
  • Six build-in non-rotating QD socket
  • Made in the U.S.A.


  • Material: 6061-T6 aluminum
  • Finish: Type III Class 2 Hardcoat Anodized
  • Inner Diameter:
    • Width: 1.8"
    • Height: 1.93"
  • Outer Diameter:
    • Width: 2"
    • Height: 2.2"
  • Weight:
    • 12-Inch SP3R V3 M-LOK Rail: 10.75 oz.
    • 15-Inch SP3R V3 M-LOK Rail: 12.5 oz.
    • Barrel Nut w/ Handguard Adapter: 3.3 oz.


  • AR-15


  • 1x Seekins MCSR V2 M-LOK Rail
  • 1x Barrel Nut
  • 1x Handguard Adapter
  • 12x Mounting Screws


If you need a new handguard/rail system for your precision AR-15, consider the SP3R M-LOK rail by Seekins Precision.

The SP3R V3 was designed to bring the performance of precision rifle stock to the AR-15 platform. In fact, the design of this handguard was created from experience with 3-gun competitive shooting. The bottom of the SP3R V3 is flat, enabling you to rest the rifle on barricades or other objects for additional stability. The unique design of this handguard is lightweight and suitable for use in aggressive shooting situations.

The M-LOK slots of this handguard permit customization with additional rail sections if more space is needed. Multiple cooling slots machined into the 6061-T6 aluminum of the SP3R M-LOK rail help keep it ventilated. The free float design can help you improve your accuracy. The Mil-Spec Type III hardcoat anodized finish will protect your handguard from corrosion and scratches.

The SP3R M-LOK rail is available in 12” and 15” lengths. Eight Torx screws, a mounting nut and a barrel nut are included to permit easy installation on a standard upper receiver.

About Seekins Precision:

The company was founded by Glen Seekins, an entrepreneur whose deer hunt failed catastrophically because of busted scope rings. Seekins immediately set about designing scope rings that would withstand the rigors of Idaho mountain hunting. His experiment was a success; he was then able to quit his job to operate Seekins Precision full-time. The Seekins name says it all. What better guarantee can you desire for your rifle parts than that of precision?

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