MP5 FRT Lower - Full Size Semi Shelf
The LS5 is the ergonomic upgrade your MP5 has been waiting for. Lee Sporting's billet aluminum lower moves your firing hand 0.6" forward and 0.4" up toward the…
The LS5 is the ergonomic upgrade your MP5 has been waiting for. Lee Sporting's billet aluminum lower moves your firing hand 0.6" forward and 0.4" up toward the bore axis, transforming the dated MP5 grip geometry into a modern, AR-like feel — and it accepts AR-pattern triggers, opening the door to a genuinely great trigger pull on your roller-lock.
Why the LS5
- Billet aluminum housing — precision CNC-machined, not polymer
- AR-pattern trigger compatible — run the trigger you already love
- Improved ergonomics — hand sits closer to bore for faster, flatter follow-up shots
- CNC-machined 4140 alloy steel ejector lever, nitride coated for wear resistance
- Ambidextrous laser-engraved pictograms
- Accepts popular AR grips (Magpul MOE-K and similar compact-pattern grips recommended)
Choose Your Model
| Model | Fits |
|---|---|
| Full-Size Semi-Shelf | PTR 9C / 9CT / 9R / 9RS / 9CL • HK SP5 / 94 • Dakota Tactical D54-N / D54SD / D54R-N • other full-size hosts without push-pin lowers |
| K Push-Pin | Century Arms AP5P • MAC-5K • Zenith ZF5-T / ZF5-K / ZF5-P • other K-size push-pin hosts |
Not sure which one you need? Semi-shelf lowers clamp onto a shelf-style receiver (HK/PTR pattern); push-pin lowers pin to MKE-pattern receivers (AP5/ZF5/POF). Check your host gun above or contact us before ordering.
Specifications
- Material: Billet aluminum housing; 4140 steel nitride-coated ejector lever
- Weight (empty): approx. 6.2 oz (Full-Size) / 7 oz (K)
- Trigger compatibility: AR-15 pattern fire control groups
- Grip compatibility: AR-pattern grips (compact profiles fit best)
- Markings: Ambidextrous laser-engraved pictograms
- Made in USA by Lee Sporting
Fitment Notes
- Semi-shelf models include shelf inserts to fine-tune fitment — the larger insert generally fits HK hosts, the smaller fits PTR.
- Trigger, safety, and grip sold separately unless otherwise noted in the listing.
- This is a firearm accessory, not a serialized part — ships directly to you, no FFL required.
In stock and ready to ship from Copperhead Safety.