A registered business in the state of Colorado (ID# 20091276671)

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1910 Maxim Reproduction Parts
1910 Maxim Semi Conversion
1919 Internals Machining
Aurora Faux Suppressor
Beretta 38a
Build Components
Build tools, Jigs and Helpful Items
CZ-23 / CZ-24 / CZ-25 / CZ-26
Carl Gustaf, Swedish K, Port Said, M/45
Custom Barrel Services
FBP (9mm) SMG
FMK-3
MP-34 Reciver / Bolt Services
MP-38 and MP-40
PPS-43
PPSH-41 Repair Sections and services
SLS (Semi-only) Sten Long Shroud Kits
Scratch, Dent and Ding Bin
Special Order Isle
Star Z-45
Stens
Suomi M-31/ KP-31
Tri-pod Adapters
VZ-58 Hybrid 80% (Non-FFL) Receivers
Yugoslavian M-56
ZK-383
Shipping Insurance
HBA Cause 4 K9s

About Us
Contact HBA Here

Site Usage Tutorials
Commonly Asked Questions
Contact/payment info and policies
Turn Around Times and Shipping
Sales, When and Where?

Trade offerings

 

HellBox Supported pages
Forums for home builders
*Weapons Guild* 
 

Prexis 80% Solutions
Prexis   

"How To" CD's for builders
AND 07 work

GunBuilds.com   

Denver Area FFL
BeckEnterprises, LLC

 

Kits & Part Sources
APEX
Cope's Distributing
Centerfire Systems 
Sarco Inc.
Military Gun Supply


The Suomi KP/-31 is regarded by many as one of the most successful submachine guns of World War II and it was so successful that many of its features were later copied by the Soviets in their PPD-40 and PPSh-41 submachine guns. The accuracy compared to the mass-produced PPSh-41 was superior, thanks in part to a noticeably longer barrel, with the same rate of fire and an equally large 71 round drum magazine. The major failing of the Suomi-KP was its high production costs.
Suomi M-31/ KP-31



Suomi M31 80% Receiver AND Lower Siderails - Original ID
Code: m31OID
Price: $235.00
We are currently sold out of 'Suomi M31 80% Receiver AND Lower Siderails - Original ID'.
We will be scheduling a production run as soon as possible for this item.
Please check the updates on the main store page for upcoming production run schedules.
Thank you for your patience and interest in our products.



Quantity in Basket: none



Suomi M31 80% Receiver AND Lower Siderails - Reduced ID
Code: M31RID
Price: $200.00
We are currently sold out of 'Suomi M31 80% Receiver AND Lower Siderails - Reduced ID'.
We will be scheduling a production run as soon as possible for this item.
Please check the updates on the main store page for upcoming production run schedules.
Thank you for your patience and interest in our products.



Quantity in Basket: none



Suomi M31 Reweld Jig
Code: Suomireweldjig
Price: $130.00
We are currently sold out of 'Suomi M31 Reweld Jig'.
We will be scheduling a production run as soon as possible for this item.
Please check the updates on the main store page for upcoming production run schedules.
Thank you for your patience and interest in our products.



Quantity in Basket: none



Suomi Weld-Over Sleeve
Code: Suomiweldover
Price: $140.00
We are currently sold out of 'Suomi Weld-Over Sleeve'.
We will be scheduling a production run as soon as possible for this item.
Please check the updates on the main store page for upcoming production run schedules.
Thank you for your patience and interest in our products.



Quantity in Basket: none



Remachine origonal Suomi bolt to a Reduced ID Semi auto bolt
Code: Remanm31bolt
Price: $130.00
Quantity in Basket: none
 



Notes for cutting the front flat on the HBA 80% Soumi tube


All ATF/NFA rules apply to purchases made from this site.

 The information/products in these web pages are not intended to be used to construct illegal firearms.

 It is the sole responsibility of the purchaser to know and understand all applicable Federal, State and local laws before placing an order.
By placing any order you are agreeing that you accept all legal responsibility for the products purchased and their subsequent use.

For legal semi auto and dummy gun information, contact BATF at: www.atf.gov

Every reasonable effort has been made to ensure that all photographs, descriptions and specifications on this website are accurate.
However, inadvertent errors may occur, and changes in design or materials, due to our continual effort to improve products, may result in some change in specifications before subsequent publications are issued.
HBA reserves the right to modify or change specifications with or without notice at any given time.