BO Dynamics FABARM STF 12 Short Initial Pump-Action Gas Shotgun

BO Dynamics
Code:
£169.99
Was £209.99
Save £40.00
  • Full metal construction
  • Licenced by FABARM, Italy
  • 3/6 BBs per shot - Ideal breaching tool!

If you're looking for a specialised entry tool as the pointman for your team, you can't ask for much better than the BO Dynamics FABARM STF 12 Short Initial Pump-action Gas Shotgun. This licenced replica of the real steel STF 12 Short Initial boasts full metal construction and the choice of either 3 or 6 BBs per trigger pull, giving you a shotgun-like spread which is perfect for engaging fast-moving targets and getting the first kill as your team breaches a room in CQB.

The real steel STF 12 is Italian-made, meaning it comes with quite the pedigree as a shotgun from the land of high-end, world-beating shotguns. The STF 12 roughly follows the same external layout as the M870 but is bristling with ergonomic enhancements, including its ergonomic pistol grip and railed pump arm, ready for your laser or flashlight. If you used the '870 before, you'll find the STF 12 familiar in the important ways but better in all the others!

If you're a Milsim skirmisher seeking a breaching shotgun for close encounters or a CQB specialist needing a platform to get the first shot when bursting into a room, the BO Dynamics FABARM STF 12 Short Initial Pump-action Gas Shotgun will give you what you need!

Full description

Frequently purchased with this gun...

Description

If you need a platform to get the first shot off when entering a room and almost guarantee a hit, the BO Dynamics FABARM STF 12 Short Initial Pump-action Gas Shotgun is exactly that. This full metal gas pump action shotgun is officially licenced by FABARM, Italy, boasting licenced trademarks across the design and a futuristic style unlike any other shotgun on the market.

Internally, this beast is based on the Tokyo Marui M870 gas shotgun design, meaning it feeds from TM shell-style tri-shot shotgun magazines and offers either 3 BBs per trigger pull or 6; perfect for taking down a fast-moving foe in a CQB environment. This, the "Short Initial" variant is the breaching-optimised STF 12, the perfect length for a shotgun secondary designed for close encounters with a minimalist design which lends itself perfectly to use by the "point man". If you like futuristically styled shotguns or want shotgun functionality without the plain Jane M870 look, the STF 12 Compact is the one for you!

Starting up front, we are greeted with the gaping 12-gauge sized bore, giving the enemy a seriously intimidating view even before the STF 12 Short Initial is fired. The lack of the breaching choke present on the Compact Version gives the Short Initial a sleek, low drag style and also allows the T238 RGB Shotgun Tracer to be mounted, the ideal shotgun accessory for CQB.

Just below, we have the mock magazine tube which in the real steel STF 12 serves as the magazine, with a 4+1 shell capacity. In Airsoft terms, this makes a nifty place to store spare shells, and although they aren't readily accessible, this is your best option if you're throwing the STF 12 Short Initial onto a backpack for specific roles at a milsim skirmish. To store shells inside, simply unscrew the front cap.

The pump arm of the STF 12 is superbly designed, complete with linear grooves to improve traction, a 20mm Picatinny rail ready for your laser or tactical flashlight and a hand stop so you don't accidentally shoot your own hand when operating the pump quickly. A combination of its spring-free gas power source and superbly designed pump arm make the STF 12 very quick to rack, much quicker than comparable 870's in our opinion.

Moving rearwards, we come to the aluminium heat shield running along the top of the alloy outer barrel, serving in the real steel to protect your hands from coming into contact with the potentially hot barrel. The headshield gives the STF 12 an aggressive, futuristic look with its angular vent ports and also includes a set of white dot iron sights with a fine aperture, giving you a compact and low-profile aiming solution ideal for a shotgun secondary used for breaching. If you want to add a 20mm Picatinny rail like the Compact Version, you're in luck! The 20mm Picatinny Top Rail for STF 12 Shotguns fits right on. 

The receiver itself is a similar shape to the old-school 870 but with angular surfaces to blend perfectly with the STF 12 aesthetic. Layout-wise, the STF 12 follows the familiar 870 control placement but with an ambidextrous shell door catch, enlarged safety button and enlarged trigger guard. The shell door catch is located in front of the trigger guard and is easy to press for fast reloads in CQB and the safety catch is to the rear of the trigger, requiring a push-through from the right to unlock the trigger, or from the left to lock it.

On the bottom, we can find the shell port which is where you insert the shotshell-style magazine. This is simple and easy to do, and when you run out of rounds, hit the shell door release and the shell will be kicked out, ready for the next one! This means the STF 12 is very fast to reload after some practice, though due to the depth of the receiver, it is not compatible with shotgun drum magazines.

On either side, we are treated to licensed FABARM trademarks, immaculately engraved exactly like the real thing. The right side features "FABARM PROFESSIONAL", "OVERPRESSURE TESTED 1638 BAR" and "STF/12" with even more in-depth manufacturer markings over on the left. This gives the STF 12 an elite look, adding to its already exciting high-end aesthetic with an air of plausibility.

The pistol grip is a comfortable ergonomic design, with linear texture on the front and rear, shaped to provide an index point on either side for the shooter's thumb. The grip also contains the gas reservoir of the STF 12, requiring the shotgun to be inverted to fill with gas. This also opens up potential HPA conversion opportunities for those that way inclined!

The ultra-compact form of this "breacher" style shotgun makes it a fantastic secondary platform, kept handy for close encounters in sites with a variety of different engagement ranges. As a CQB primary, the STF 12 Short Initial is about as lean and mean as it gets, providing a shotgun-like spread for easy hits on moving targets with an instant trigger response to aid you in getting the first shot off when bursting into a room.

If you're looking for a specialised CQB tool you can easily carry along with your usual primary, the FABARM STF 12 Short Initial from BO Dynamics is exactly that. Compact and agile, full metal with licenced trademarks and the choice of either 3-shot or 6-shot mode, this is the doorkicker's best friend!

Features

  • Full metal construction - Hefty & realistic
  • 3 or 6 BBs per trigger pull - Realistic shotgun-like spread, great for moving targets
  • Aluminium heat shield - Ultra-modern looks
  • 20mm Picatinny railed pump arm - Mount a laser or flashlight here for CQB
  • Hand stop built into the pump arm - Stops you overshooting the pump and shooting your own hand!
  • Light-enhancing iron sights - Ghost ring style, easy to pick up in low-light environments
  • Enlarged trigger guard - Easy access to the trigger, even when wearing gloves
  • Ambidextrous shell door release - Swap shell magazines from either side
  • Push through safety catch - Push through from the left to unlock the trigger
  • Ergonomic pistol grip - Shaped well with linear gripping grooves for traction
  • Steel sling points front and rear - Ready for a two-point sling
  • Gas reservoir inside the pistol grip - Invert the shotgun to fill with gas
  • Compatible with Tokyo Marui-style tri-shot shotgun shell magazines
  • NOT Compatible with drum magazines - What a shame!
  • 20mm Picatinny top rail with light enhancing iron sights available here
  • Compatible with the T238 RGB Shotgun Tracer Unit - The perfect compliment for CQB!

Package Includes

  • BO Dynamics FABARM STF 12 Short Initial Pump-action Gas Shotgun
  • 3 x 30rnd Shotgun Shell Magazines
  • Speedloader

Specification

General

Weapon Construction External
Weapon Type
Shotgun
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 330fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Yes
Screwdriver Icon
Pre-Built
Yes
Package
Included Items
  • Speed Loader
  • 3 x Shotgun Shells
Skill Level Icon
User Skill Level
Regular Player
Patrol Base - Warning Icon
Warnings
Lubrication is required

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.726kg
Weapon Length Collapsed
Length (Collapsed)
52cm
Weapon Length Extended
Length (Extended)
52cm

Construction

Colour Wheel Greyscale
Primary Colour
Black, Dark Earth, Olive Drab,
Construction Icon
Construction
Steel sling points, safety catch, body pins & screws. Alloy outer barrel, mock magazine tube & receiver. High density polymer pistol grip & trigger guard.
Weapon Construction External
External Construction
Polymer
Alloy
Steel
Gearbox Icon
Internal Construction
Polymer
Alloy
Aluminium
Steel

Weapon Specific

Power Source Icon
Powered By
Green Gas
Blowback Icon
Blowback
None
Weapon Platform
Shotgun, Tri-shot shotguns, FABARM STF 12,
Magazine Style Icon
Magazine Style
Shotgun, Airsoft Shotgun Shell, Tri-shot shotguns,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Safe
Pump Action
Single Action
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Icon
Hop-Up Unit
Yes
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Fixed

Furniture

Weapon Furniture Icon
Furniture
  • Railed Handguard
  • Ergonomic Pistol Grip
  • Enlarged Trigger Guard
  • sling points front and rear
  • White dot iron sights
  • Ported Barrel Shroud/Heat Shield
  • Ambidextrous shell door release
Rail System Icon
Rail System
20mm RIS / RAS
Sight Type Icon
Sight Type
Iron Sights , Aperture Iron Sight,
Sling Plate Icon
Sling Options
Handguard , Loop , Receiver ,

Barrel

Outer Barrel Length (in)
10''
Inner Barrel Diameter
6.08mm
Inner Barrel Length
250mm

Magazine Specific

Magazine Type
Low Capacity , Shotgun Shell,
Magazine BB Capacity
Approx. 30 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location
Front
Magazine Gas Fill Location
On the bottom of the grip
Magazine Gas Type
Green Gas

Gas Gun Specific

Gas Can Icon
Gas Compatability
Summer Gas, Green Gas, Red Gas,
Gas Can Icon
Gas Recommendation
Green Gas

Shotgun Specific

Shotgun Load Style Icon
Shotgun Load Style
Shot shell magazine
Shotgun Barrel Configuration Icon
Barrel Configuration
Tri-Barrel

Product Testing Data

Notepad Icon
Test Description
330 FPS +/- 10%
Notepad Icon
Tested Using
0.2g ASG Blaster BBs & VORSK V6 Green Gas
Notepad Icon
Test Date
28/06/2024

Related video

FABARM STF12

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
325 0.98 1.23 1.37 1.47 1.57 1.77 1.96 2.11 2.21 2.45
328 1.00 1.25 1.40 1.50 1.60 1.80 2.00 2.15 2.25 2.50
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
335 1.04 1.30 1.46 1.56 1.67 1.88 2.09 2.24 2.35 2.61
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
345 1.11 1.38 1.55 1.66 1.77 1.99 2.21 2.38 2.49 2.76
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
355 1.17 1.46 1.64 1.76 1.87 2.11 2.34 2.52 2.63 2.93
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90
420 1.64 2.05 2.29 2.46 2.62 2.95 3.28 3.52 3.69 4.10
430 1.72 2.15 2.40 2.58 2.75 3.09 3.44 3.69 3.86 4.29
440 1.80 2.25 2.52 2.70 2.88 3.24 3.60 3.87 4.05 4.50
450 1.88 2.35 2.63 2.82 3.01 3.39 3.76 4.04 4.23 4.70
460 1.97 2.46 2.75 2.95 3.15 3.54 3.93 4.23 4.42 4.91
470 2.05 2.57 2.87 3.08 3.28 3.69 4.10 4.41 4.62 5.13
480 2.14 2.68 3.00 3.21 3.42 3.85 4.28 4.60 4.82 5.35
490 2.23 2.79 3.12 3.35 3.57 4.02 4.46 4.80 5.02 5.58
500 2.32 2.90 3.25 3.48 3.72 4.18 4.65 4.99 5.23 5.81
510 2.42 3.02 3.38 3.62 3.87 4.35 4.83 5.20 5.44 6.04