These files are free and ready for your printer. These files are for NON-Commercial use ONLY. Contact us before selling these files or parts to anyone.
Several file sets are remixed versions to make mass-production easier, aid in printing, etc. You can see the changelog from the original design below.
Please reach out to us with any questions! Happy printing.
If you don’t see the file you need here yet, please email support@frontlinefoam.com and we’ll get it to you.
Print settings are included in each file name in the format of ([Perimeters],[Infill %]). “S” for support, and “SI” for recommended to be printed with Supports and a Support Roof Interface.
2nd Degree Caliburn FILE DOWNLOAD
Hardware available can be purchased at this link: 2nd Degree Caliburn Hardware
*SELECT FILES ONLY*
[CHANGELOG FROM ORIGINAL DESIGN]
– Modified to take 4-40 screws. Heatinserts can be used by drilling the screw ports to fit your size of heatinsert
– Widened magnet slots to take 8mm wide magnets for a stronger magnetic hold
– Modified switch cutout to take more brands/styles of 21A switch
– Modified MagPaddle to remove need for post-processing
– Added chamfers to bottoms of most parts to reduce elephant’s foot on prints
– Modified Trigger and shell halves for more reliable trigger fit
– Modified shroud for modular rails
– Widened inlet port to accept wider fittings
– Changed JamDoor and Shell halves to take 1/16″ pins (Caliburn) instead of printed pivot
Hardware available can be purchased at this link: Axiom Hardware
*SELECT FILES ONLY* Buy the rest from the designer.
[CHANGELOG FROM ORIGINAL DESIGN]
– Deepened screw ports for use with full length shell screws
– Added wire channel cutouts to make wire management much easier
– Changed grip to use 21A switches
– Modified trigger shape to remove need for post processing and use of springs
– Added chamfers to bottoms of some prints to reduce elephant’s foot on prints
– Modified stock to include captive 6-32 hexnut for 6-32 thumbscrew
– Added cutouts in Gripinsert for screw heads
Hardware available can be purchased at this link: Bulwark Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Adjusted tolerances for many parts for easier assembly on a wider variety of printers
– Added chamfers on file bottoms to alleviate elephant’s foot
– Included printable AR Grip in fileset
– Added a solid piece Sear to be printed instead of modifying a priming bar
– Modified Bolt to use o-rings instead of super glue (see Indra and KronoMag for similar examples)
– Rotated models for correct print orientation. Load, Slice, and Go!
– Added print settings to file names in the format of ([Perimeters],[Infill %])
Hardware available can be purchased at this link: B-Variant Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
Hardware available here: Caliburn 4 Hardware Kit
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Includes muzzle for brass barrel utilizing a clamp-retention
– Top railgasm modified to take barrel adapter for tighter barrels
– Mag release pin holes widened to remove need for drilling/filing
– MilanCoupler walls thickened to reduce chance of breakage
– Rambase hole made smaller for better airseal between base and core
– Plunger o-ring slot widened for better plunger airseal
– Plunger hole widened to fit k14 spring
– Frontbutt hole widened to fit k14 spring
Hardware available can be purchased at this link: Caliburn Hardware
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Added brim to foregrip print to increase print reliability
– Made hole in rambase smaller to create better seal between base and core
– Widened holes in mag release to remove need to file/drill pin holes
Hardware available can be purchased at this link: ESPER Hardware
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened hexnut slots to make them easier to install
– Added chamfer to pusher base removing need to post-process elephants foot
Click here to download
Flintlock Pistol FILE DOWNLOAD
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened hexnut slots to make them easier to install
– Added chamfer to pusher base removing need to post-process elephants foot
CALIBURN:
Angled Foregrip by Captain Slug
Pyrangle Foregrip by Captain Slug
Modular Vertical Foregrip by Captain Slug
[CHANGELOG FROM ORIGINAL DESIGN]
– Fixed fatal error in side rails which made one side unusable
– Lots of others
Hardware available at this link: GRYPHON HARDWARE KIT
Click here to download
HPA U TALON CLAW FILE DOWNLOAD
[CHANGELOG FROM ORIGINAL DESIGN]
– Modified Magfront to take 4-40 hex standoffs
– Added picatinny rail to magfront
– Thickened Magfront walls to prevent breaking from overightening barrel coupler screws
– Modified Magback to take 4-40 hex standoffs
– Modified mag release spring mount to take 4-40 screw
– Widened pin hole on mag release to remove need to drill/file
– Modified rearplate to include on/off labeling (very helpful imo)
– Designed and added top cover to protect SuperCORE
– Redesigned handle to fit regulator better
– Widened barrel screw pin for more clamping force
– Added battery door, compartment, and room for 6-32 thumbscrew to bottom of handle
– Changed grip to take 4-40 hex standoffs instead of hexnuts
– Reposition and resized pin holes to take 1/16 pins (Caliburn pins)
– Made more room for solenoid for easier wire management and diversity in solenoid compatibility
– Widened sideplates to cover more of the skeleton making the overall look more sleek
– Cut away a small section of the lower grip to allow for regulator outlet fittings to fit without dremeling/filing
Hardware available can be purchased at this link: HPA UTC Hardware
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Added 6-32 hexnut to base print for more durability
– Modified Nose to better fit Worker Hurricane wheels without rubbing on print
– Heightened Topcover slightly to fit Fang ReVamped motors and 130 sized motor shafts
– Thickened Nose top wall to improve TopCover installation durability
– Changed angle on nose to allow for full length shell screws to be used.
Hardware available can be purchased at this link:
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Worker with MHP ARMs personally to finalize design
– Solved TT gearbox stripping problem
– Tons of changes on hole sizes
– Adjusted belt puller and retainer to aid in feeding
– Removed unused holes, added frame reinforcements, refit for use with standard Caliburn and similar hardware
– Adjusted screw ports to minimize variety of different hardware
Hardware can be purchased at this link: The MHP LMG Hardware Kit
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Changed just about every part
– Adjusted CylinderPin to fit in frame without sanding or filing
– Added chamfer to ReleaseLever bottom to remove elephant’s foot
– Added chamfers to most bottom-facing holes to reduce post-processing of holes
– Widened slot in Hammer for compatibility with more springs
– Modified hammer to take 1/16 pin instead of screw
– Removed elephants foot on IndexingArm, Cage, TriggerSear, Frame pieces, Sights, and others
– Lengthened Pusher by 0.5mm to aid in timing
– Widened Pusher feet to reduce wear which caused pusher to get stuck in Hammer
– Widened hole in Trigger for 1/8 Pin (Spring Thunder/Viper pin)
– Removed elephant’s foot on trigger which caused inconsistent hole size
– Added retention feature on Barrel and Frame to better secure barrel
– Added internal cutouts in Grip for shell screw heads
– Shortened TopCovers to remove bowing that was present after assembly
– Removed angles on back of TopCovers which frequently caused warping and made the Covers not sit flat
– Added chamfers and made more room in the CylinderCover
– Widened dart holes in Cylinder which caused jams with new darts
– Widened slots on BatteryCover and Grip to create a looser fit for the cover
– Modified frame to create more room and new mounting method for switch
– Relocateed frame screw position for lower screw so full length screws could be used and not interfere with each other
– Modified SightRear to fit better in SightRearBase and sit flush with new TopCover
– Widened hole in CylinderArm to remove need to drill/file for CylinderPin
Hardware available can be purchased at this link: Magpie Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– In progress
Hardware available can be purchased at this link:
[CHANGELOG FROM ORIGINAL DESIGN]
Designed a Latch System
Lengthed Front
Made tweaks to Cylinder
Adjusted rear and front to take Caliburn length threaded rod
Made Front reinforcement extend further for more support.
Hardware available at this link: PARTY POPPER HARDWARE KIT
[CHANGELOG FROM ORIGINAL DESIGN]
– Added brims
– Modified cage
– Adjusted screw port size and depths
Hardware available can be purchased at this link: Pigeon Mk7 Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Modfied overhangs on Frames, Slide, Mounts, Cage, and Trigger for reduced supports
– Modified Gear hole sizes to reduce post-processing
– Removed elephant’s foot on numerous parts
– Added brim to Grip scales
– Added spring rest to Cage for Katana MagRelease spring
– Reduced diameter of Pin to fit better in Cage
– Shortened nub on SlideSafety to more easily clear Mount for faster disassembly
– Added optional small washer to retain large gear
– Modified MotorTool to e able to be used after soldering
Hardware available can be purchased at this link: Pigeon MK8 Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Lengthened the Stock Body 1/2” to fit 1300 lipo
– Widened hole in Tray Door for through fit on M3 screw
– Widened Buttplate to fit 8mm stock rods
– Adjusted Pin hole size in Pinion, Grip, and Trigger cover for less slack in the fit
– Labeled cages and BCARs
– Added a mag release stop so the mag release can’t be pulled too far causing the mag to stick
– Resized Receiver and cage for wider fit around dart to reduce dart scrapping in cage
– Added a shim inside the trigger to give the return spring more force
– Fixed a missing hex geometry corner on Mech Cover
– Adjusted Grip screw cutouts to fit M4 screws and nuts
Hardware available can be purchased at this link: Protean Hardware Kit
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Original files created by Frontline Foam based off of the OG Rainbow design
– Merged catch circles into one piece
– Uses same shape and size plungerhead as Caliburn (Design by CaptainSlug)
– Added CatchCircle for K25 and K26 size springs
Hardware available can be purchased at this link: Rainbow Hardware
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Original files created by CaptainSlug
– Extended Prong for more reliable ball release
Hardware available can be purchased at this link: Rivalburn 3 Hardware
Click here to download. This only includes our STLS that were modified. You will need to purchase the rest of them on HingYip’s Etsy here: Sirius 747 STLs
[CHANGELOG FROM ORIGINAL DESIGN]
– Modified pin holes to take M3 pins without drilling (StockLatches, Stock)
– Widened all HeatInsertHoles for less “blowout” when installing inserts
– Oriented parts for printing
– Added recommended print settings to names
– Adjusted mag detent for more positive retention
– Adjusted BCAR body for less tight fit in barrel
Hardware available can be purchased at this link: Sirius Hardware
Click here to download
[CHANGELOG FROM ORIGINAL DESIGN]
– Modified pin holes to take 6-32 flathead screws
– Modified TriggerLink to provide more travel
– Widened holes in Link for easier pivoting
– Modified Pusher shape for better retraction
– Modified Catch shape for easier insertion and removal of magazines
– Modified IronSight for a tighter fit in TopCover
– Modified cage to reduce supports and reduce “dart chew”
Hardware available can be purchased at this link: Snake Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Modified hole tolerances for better fit with pins
Hardware available can be purchased at this link:
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened some holes to make installing pins easier
– Modified PlungerHead to be a pressfit on plungerrod shaft
– Adjusted some tolerances to reduce post-processing
Hardware available can be purchased at this link: Spring Thunder Hardware
Talon Claw 4 (T4) FILE DOWNLOAD
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened RamB o-ring slot diameter for better airseal
– Added new stock options to fileset
– Added optional attachment point for Sear spring
– Removed unused holes/features from Grip and Muzzle
– Widened RearButt to allow use of Longshot sized springs
– Added PicatinnyTie mounts
Hardware can be purchased here: TALON CLAW 4 (T4) HARDWARE KIT
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened holes in RearPlate to more easily install SlidingButtstock
– Added custom RearPlate with buffer tube and Nerf stock options
– Added Muzzle for brass barrel
– Modified rambase for better airseal between ramcore and base
– Added modified Railgasm for use with barrel adpater
– Modified RearPlate for compability with Turf Longshot springs
– Added custom AR Shroud
Hardware available can be purchased at this link: Talon Claw Hardware
Download the Tempest Files Here
(Changelog coming soon)
[CHANGELOG FROM ORIGINAL DESIGN]
– Thickened walls around hexstandoffs to increase part durability
– Modified rambase for better seal between ramcore and base
– Modified railsegments to remove brim
– Added modified ButtPlate for use with Turf Longshot springs
– Added modified Pcap plate for use with Aluminum Pcap Plate reinforcement
Hardware available can be purchased at this link: U Bullpup Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Thickened hex-standoff walls for increased durability of parts
– Modified shuttle for use with barrel coupler
– Added new railsegment for cross-compatibility with U Talon Claw U Channels with v4 hardware
– Widened Plunger to take K14 spring
– Added modified Pcap plate for use with Aluminum Pcap plate reinforcement
Hardware available can be purchased at this link: U Caliburn Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Thickened hex-standoff walls for increased durability of parts
– Modified shuttle for use with barrel coupler
– Added new railsegment for cross-compatibility with U Talon Claw U Channels with v4 hardware
– Widened Plunger to take K14 spring
– Added modified Pcap plate for use with Aluminum Pcap plate reinforcement
Hardware available can be purchased at this link: U Caliburn Hardware
[CHANGELOG FROM ORIGINAL DESIGN]
– Widened BreakLock hole to take 1/16″ pin (Caliburn pin)
– Shorted Cam to reduce friction of Cylinder on NoseBottom
– Modified NoseBottom to take 1/8″ pin (Spring Thunder pin)
– Modified Trigger pin holes in shells to take 1/16″ pin (Caliburn pin)
Hardware available can be purchased at this link: Viper Hardware
Updated Oct 18, 2022
Hardware can be purchased at this link: Woozi Hardware
[CHANGELOG FROM ORIGINAL DESIGN BELOW]
– Widened hole in gear for easer N20 installation
– Changed gear to use Shell Screw instead of Grub Screw to attach to N20
– Resized pusher to reduce friction on Lid, Gear, etc
– Reduced elephant’s foot on many parts to reduce need for post-processing
– Modified BatteryCover and Shell to take 6-32 Thumbscrew
– Widened trigger holes in Shell to remove need to file/drill
– Resized several screw ports so Shell Screws pass through one half, and grab into another instead of grabbing into both for QOL in assembly
– Adjusted several parts to print without or with less supports
– Modified cage for more reliable mag gravity drops
– Also modified cage to be both dual and single stage with one print
**NOTE: These files are NOT compatible with hardware kits by Foam Knight. You must use our hardware kit or source our hardware to print these files.
CHANGE LOG:
– Widened the threaded rod holes with increased tolerance so that the rods are easier to install (Handguard Middle, Grip Segment, Buttstock, Stock Spacer)
– Changed most hole sizes to fit #6 screws which are more standard than #8
– Changed Pump and priming Bars to use Caliburn standard foregrip screws (10-32 x 5/16)
– Changed the Elite Bolt to use 6-32 locknuts instead of the 8-32
– Lengthened Rival Retention Pin to make use of Rainbow springs and other springs
– Modified Magwell Release, Top Rail, Rival Magwell, Takedown Crossbolt, Rival Mag Release, and others to use extension springs and compression springs to use Caliburn, Viper/Snake and Rainbow hardware
– Removed the need for most locknuts (screws now drive into plastic)
– Modified prints to accept Caliburn plunger tubes
– Modified Mega and Rival Bolt to utilize Mega and Rival Caliburn ram o-rings
**Different hardware is required for these STL files to be compatible with 118 Design’s hardware kit**
Hardware that is different is the following:
4-40 x 1 Flathead (Sear Pivot) QTY: 1
1/16 Pin QTY: 2
4-40 x 3/8 Flathead Screw QTY: 6
FULL CHANGE LOG:
Front:
– Changed from pin to 4-40 flathead
– Widened Thumbnut holes a hair
– Changed screw holes for 4-40 flathead
– Widened center hole for smooth rod
Sear
– Changed to fit 4-40 screw and modified for slightly less supports
Rear
– Thickened o-ring groove for better seal in barrel.
– Changed holes to fit 4-40 flathead screws
Release
– Made slightly smaller for slightly better fit in frame
Cover
– Modified top hole for 4-40 flathead screw
Slide
– Modified top hole for 4-40 screw
– Removed slots for hexnuts
– Modified front and rear holes for 4-40
– Widened slide slightly to better fit Plunger Tube
– Widened center hole for smooth rod
Frame
– Removed slots for hexnuts
– Modified front and rear holes for 4-40 screws
– Modified roof for slightly better printing without supports
– Widened barrel hole for a looser push fit for barrel
– Changed pin slots to take 1/16th pins
Guard
– Changed pin hole size
Plunger
– Widened center hole for smooth rod
– enlargened threads for plunger core fit
Trigger
– Made hole slightly larger to better fit around better
– Removed material from either side for smoother fit in frame
Add-ons
Magazine
Body
– Modified overhang for mag catch to print with less warping
– Added built in brim to increase bottom surface area
Follower
– Added chamfer to base to reduce elephant’s foot
Changelog Part2:
– Thickened common areas that break on the Slide and Front
– Reverted back to using hexnuts in rear of the Slide for increased durability of the Slide
