RPP Costa Henry M-LOK Rail System



Available on back-order


DESIGNED WITH: Direct input and oversight by Chris Costa, Costa Ludus.

FITS MOST HENRY LEVER ACTIONS. SEE FULL LIST BELOW IN DESCRIPTION: Henry Side Gates, X Models, Color Case Hardened, Big Boy Steels, All Weather, .410 Axe rifles

DOES NOT FIT: Henry Long Rangers, Single Shots, 22 Rimfires, Barrel band models, 45/70 H010GCC and 30-30 H009GCC with the longer forend and 22″ octagon barrel

NO LOAD GATE CUTOUT: You CAN NOT load via the mag tube loading port (use the side gate or end of tube)..

FEATURES: 13.25″ L handguard: Grippy cutouts, M-LOK accessory slots sides/bottom, QD swivel sling holes, traditional sling stud threaded hole.

RAIL SYSTEM OPTIONS: Three rail sections: 2 Gator rails fit on top of the forearm + receiver rail. (use none, one, two or all three).

MATERIAL: 6061-T6 aluminum Type III Anodized

MOUNTING HARDWARE: 17-4ph stainless tenon/2 screws + Four mounting set screws to eliminate side-to-side play + four jack screws for vertical alignment.

INCLUDED: One COSTA M-LOK Handugard + One Gator Rail, + tenon and all hardware

OPTIONAL: Add on a Receiver Rail or a 2nd Gator Rail

INSTALLATION: Watch the install video. Taking Henry’s apart can be tricky. We’re not liable for any damage to your rifle.


Designed with direct input and oversight by Chris Costa, Costa Ludus.

The Costa Ludus/Ranger Point Handguard Rail System was designed to provide lever gun shooters with exceptional flexibility in setup and cost while safeguarding the qualities of lightweight handling and accuracy that we love about these fine firearms.

Why a Three Rail Arrangement?

In order to meet all these goals, we split the top picatinny rail into 3 separate sections (one receiver rail and two Gator Rails that attach to the top of the handguard). The handguard can be used with all 3 picatinny top rails, one, none, or any combination of two. It’s worth noting that installing one or more Gator rails makes the handguard even stronger. Watch this video to see all of the various ways that you can set it up.

In order to accommodate a range of manufacturing tolerances in the host rifles, we have imbued the entire handguard/rail system with adjustable fitments. We also made a deliberate decision not to use a continuous top rail in order to mitigate the effect of manufacturing tolerances on accuracy. Our past experience as custom lever gun builder has taught us that accuracy generally falls off when one ties the receiver to the barrel with a continuous rail. For the same reason, we strongly advise against “bridging” the receiver rail to a Gator Rail with a single optic.

The Costa/RPP Handguard + Rail system has adjustment in 3 ways:
1. Laterally at the receiver junction–via the angled set screws.
2. Laterally at the mounting tenon–via the perpendicular set screws and the tenon itself.
3. Vertically at each leg of the “Gator Rails.”


  • Extremely robust for hard use. The installed system can suspend well over a hundred pounds and resist crushing under the weight of an adult male.

  • Modular flexibility allows mounting of any style of optic or combination of sighting options. 3 rails can be used in a series or as a combo or individually. The handguard “Gator Rails” can be rotated 180 degrees to achieve the perfect eye relief with red dot or LER scopes. Unused rails can be removed to reduce weight or achieve lower mounting heights.

  • Includes M-LOK accessory slots, QD mounts, and a threaded hole for a traditional sling stud for max utility.

  • Unique, aggressive look and excellent grip with or without a hand stop.

  • Split three-piece rail system decouples the two forward rails from the receiver, preserving optimal accuracy.


– Henry X Models: H009X, H018X-410, H010X, H012CX, H012MX, H012X

– Axe .410s: H018AH-410, H018BAH-410

– 410 Shotguns: H018G-410, H018G-410R, H018X-410,
– Color Case Hardened 30-30, 45-70: H009GCC, H010GCC
– All Weather 45-70: H010GAW
– Steel Side Gate 45-70; H010G
– All Weather 30-30; Big Boy All Weather 44 mag, 357 mag, 45 Colt: H012GAW, H012GMAW, H012GCAW, H009GAW
– Big Boy Color Case Hardened 44 mag, 357 mag, 45 Colt: H012GCC, H012GMCC, H012GCCC, H012GRCC, H012GMRCC, H012GCRCC
– Steel Side Gate 30-30: H009G, H009GL
– Big Boy Steel Side Gates 44 mag, 357 mag, 45 Colt: H012G, H012GM, H012GC, H012GL, H012GML, H012GCL, H012GR, H012GMR, H012GCR
– Side Gate Brass 410: H024-410

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