MARS 3-Position FRT Lower for Heckler & Koch SP5K

Original price was: $599.00.Current price is: $499.00.

A complete, drop-in FRT lower for the Heckler & Koch SP5K, with the fire control group and 3-position super safety pre-installed.

  • Swap-in lower, no trigger assembly needed
  • Safe / Semi / FRT selector
  • D2 tool steel trip
  • Polymer carbon-fiber grip frame

The MARS FRT for the Heckler & Koch SP5K is a complete MP5-pattern lower: a polymer grip frame with the fire control group and a 3-position super safety already installed. Instead of building up a trigger pack yourself, you swap the factory lower on your HK SP5K for this one. The selector gives you Safe, Semi and FRT positions, and every shot still requires its own separate pull of the trigger.

Key Features

  • Complete lower with fire control group pre-installed
  • Hoffman 3-position super safety: Safe / Semi / FRT
  • Hardened D2 tool steel trip
  • Polymer carbon-fiber grip frame with textured ergonomic grip
  • Drop-in ready, no assembly needed

Specifications

Manufacturer MARS
Type Complete FRT lower (grip frame + FCG)
Fits Heckler & Koch SP5K
Selector 3-position
Trip Hardened D2 tool steel
Grip frame Polymer carbon fiber, black

Compatibility

  • Heckler & Koch SP5K
  • Order the lower that matches your exact model. The K and full-size versions are not interchangeable listings.

What’s in the Box

  • 1 x complete MP5-pattern lower with FCG and super safety installed

Before You Order

Forced reset triggers and selectors are regulated differently from state to state, and some states and localities restrict or prohibit them. Please confirm this product is legal where you live before you order. We do not ship to locations where it is restricted. See our shipping policy for details. If you are not comfortable installing fire control parts, have a qualified gunsmith install it.

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