HW100 Bullpup - RAT Works Edition

HW100 Bullpup & Bullpup K
The new HW100 Bullpup proves that accuracy and mobility can be on point, while balance is not compromised. Born from the famous HW100 series, the HW100 Bullpup is based on Weihrauch’s renowned mainframe – providing ultimate performance. The rifles features a black, ambidextrous soft-touch stock and Weihrauch’s distinguished two –stage match trigger. Extra features include a picatinnay rail, which can be removed, ambidextrous pistol grip and 14 shot magazine.


When you buy a RAT Works edition it will come fitted with a Tench regulator and will be fully tuned by our amazing technicians here at The RAT Works.

With the HW100's you will also have one of our lightweight air cylinders fitted. This is not only 50% lighter than the standard air cylinder, it will also give you twice the shot count too. The lightweight cylinders are also fitted with the Standard Weihrauch quick fill end and pressure gauge (0 to 250).


Fill Pressure when Tench Regulated



100 Carbine




100 Rifle




100 Bullpup (Short)




100 Bullpup (Long)




Alongside the regulating and tuning work carried out on The RAT Works edition HW100 you will also get the breech block and stock custom engraved with our logo on, which helps it stand out not only in performance but looks too.

PLEASE NOTE: If you order .20 this is classed as a special order item that can not be cancelled once order, please contact us for the current wait time for special order items.


- Weihrauch HW100 BP / HW100 BP K (RAT Works Edition) x1

- Screw on moderator x1

- 14 shot magazine x2

- Fill port probe x1

- Fill port plug x1


Once you have purchased the rifle of your choice you can either come over to us and pick it up or we can ship it out.

We are unable to ship any form of firearm directly to you, due to the firearms act of 2006.

This means you must give use the details of your nearest RFD or Gun shop.

To ship firearms we use Parcelforce courier service incurring £27.50 carriage on top of your purchase. Your RFD or Gun shop may choose to add a handling fee at their discretion. 

Not all rifles are keep in stock and most are ordered in. Due to the Covid-19 outbreak there is a wait time on different rifle manufacturers. Please get in touch with us for more information. 

When you are placing an order for a RAT Works edition rifle during the check out process you will be asked to either Pay Now or Pay Later. If you want to pay in full click pay now. We will class paying in full as paying the deposit. If you would like to pay a £150 deposit for us to reserve/order your chosen rifle then click pay later. Once we have received your order we will send you a invoice for the deposit then once this is paid the rifle will be reserved / placed on order. The Deposit is taken off your final payable amount. 

See our Terms and conditions for more details. 


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