HRF CONCEPTS
RCM Magwell, Sig Sauer MCX / SPEAR LT
The RCM, or Rifle Combat Magwell, adds a 250% larger flared funnel surface to the magazine well. This version is designed for Sig Sauer MCX pattern lower receivers.
Fitment
Fits all Sig MCX, Virtus, Rattler, SPEAR LT, and Canebrake lower receivers.
If you run into difficulty during installation, contact HRF Concepts support.
Which Lower Do You Have?
The RCM is receiver specific. Match it to your lower:
What the Funnel Does
A magazine has to find the well before it seats. The wider the opening, the more forgiving that is when your hands are cold, the light is bad, or you are not in a textbook shooting position.
The RCM works well for unconventional shooting positions, working under night vision, and reloading on the move.
Magazine Compatibility
Works with all major magazines on the market, including M3 PMAGs, and with higher capacity options such as the Magpul D60 and Surefire MAG5-60.
Colors and Coating
Available in black, FDE, and ODG.
The FDE is coated in Cerakote FIR, a near-infrared signature management finish, and the ODG in Cerakote F-Series. Worth knowing if you run night vision and care about how your gear reads under IR.
What's Included
1x HRF Concepts RCM MCX Magwell in your selected color
2x RCM 4-40 bolts
1x 5/64 inch hex L-key
Specifications
- Fits Sig MCX, Virtus, Rattler, SPEAR LT, and Canebrake lower receivers
- 250% larger flared funnel surface
- Material: nylon polymer
- Weight: 0.6 oz (17 g)
- Length: 3.47 inches (88 mm)
- Width: 1.91 inches (49 mm)
- Height: 0.58 inches (15 mm)
- Height from inside shelf: 0.35 inches (9 mm)
- Available in black, FDE (Cerakote FIR), and ODG (Cerakote F-Series)
- Made in USA
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