MARS 3-Position FRT Lower for MAC 5K
Original price was: $599.00.$499.00Current price is: $499.00.
A complete, drop-in FRT lower for the MAC 5K, with the fire control group and 3-position super safety pre-installed.
- Swap-in lower, no assembly
- Safe / Semi / FRT
- D2 tool steel trip
- Free 3–5 day shipping
- Free shipping3–5 business days, ships from Texas
- Legal states onlySee where we ship
- 30-day returnsOn unused, uninstalled items. Policy
- Help before you buyText (940) 217-4704
Check compatibility first: read the requirements in the description below. Installed triggers can’t be returned, so text us if you’re unsure.
The MARS FRT lower for the MAC 5K is the simplest way to add forced reset to the compact MAC 5K. It is a complete MP5-pattern lower with the fire control group and a 3-position super safety already installed, so you swap your factory lower for the MARS unit with no trigger pack to build.
- Made for the MAC 5K
- Complete lower, fire control group pre-installed
- Hoffman 3-position super safety: Safe / Semi / FRT
- Hardened D2 tool steel trip
- Polymer carbon-fiber grip frame, textured grip
- Drop-in ready, no assembly
The Easiest MP5 FRT for Your MAC 5K
With a complete lower, there is nothing to assemble: the trigger group, trip and super safety are fitted at the factory. You remove your MAC 5K’s factory lower and install the MARS lower in its place. Every shot still requires its own pull of the trigger.
Order the lower made for your exact model. MARS lowers are matched to one host firearm. Other models: HK SP5, HK SP5K, Zenith ZF-5, Zenith ZF-5K, PTR 9 and more in HK & MP5 FRT. Prefer a trigger-only option for an HK? See the Rare Breed FRT-RD3.
MARS MAC 5K FRT Lower Specifications
| Brand | MARS |
|---|---|
| Type | Complete FRT lower (grip frame + fire control group) |
| Fits | MAC 5K |
| Selector | Hoffman 3-position super safety |
| Trip | Hardened D2 tool steel |
| Grip frame | Polymer carbon fiber, black, textured |
| SKU | FTS-MARS-MAC5K |
Compatibility & Requirements
- MAC 5K
- Order the lower that matches your exact model; full-size and K versions are separate listings
What’s in the Box
- 1 x complete MP5-pattern lower with fire control group and super safety installed
MARS Lowers for Other Models
- MARS FRT Lower – HK SP5Made for the Heckler & Koch SP5.
- MARS FRT Lower – HK SP5KMade for the Heckler & Koch SP5K.
- MARS FRT Lower – Zenith ZF-5Made for the Zenith ZF-5.
- Rare Breed FRT-RD3 (AMBI)Trigger-only MP5 FRT for HK grip frames.
MARS MAC 5K FRT Lower FAQs
Will this MARS lower fit other MP5 clones?
It is made for the MAC 5K. MARS makes a separate lower for each host firearm, so choose the one that matches your exact model.
Do I need to assemble anything?
No. The fire control group, trip and 3-position super safety come installed. You swap it for your factory lower.
What are the selector positions?
The Hoffman 3-position super safety gives you Safe, Semi and FRT.
Why Buy From FRT Trigger LLC
- Free 3–5 day shipping on every order, from Wichita Falls, Texas. Shipping details
- Help before you buy: text (940) 217-4704 with your make and model.
- 10% off your first order with code FRTTEXAS10, or 20% with crypto. See coupons
- Buying several? Save up to 40% with wholesale pricing.
Unused, uninstalled items can be returned within 30 days. Refund policy.
Forced reset triggers are restricted in some states. We do not ship FRTs to California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, Oregon, Rhode Island, Washington or Washington, D.C. Please confirm your local laws before ordering. See state restrictions. This is general information, not legal advice.
Learn more: What is a forced reset trigger? · How an FRT works · FRT trigger types · Pros and cons of FRTs
