Welcome to Sero USA

The GM6 ‘Lynx’ is a semi-automatic anti-material rifle. It’s designed to be compact, lightweight, accurate, low-recoil, portable and easily deployable for immediate use. Most rifles chambered in .50 BMG are heavy, long, bulky, heavily recoiling and are of a slowly operated bolt action. Many not even magazine fed.

Due to the bullpup configuration, most of the weight is re-distributed to the rear of the rifle allowing for the possibility of off hand firing. This is near impossible with most other .50 BMG rifles. Thanks to the unique barrel recoil technology, the rifle’s recoil is less than the other rifles in the same category. This design also allows the rifle to be transported at a length of only 914mm/35.98″. It weighs just 23lbs, with a slight rear bias weight distribution. Assembled with match grade barrels, capable of sub-MOA accuracy with match grade ammunition. Sees active duty with European Special forces and Law Enforcement teams.

Comes with spare magazine, pair of 34mm 50 BMG scope rings, spare barrel spring, bi-pod, cleaning kit, Pelican 1750 hard case, and manual.


• Durable mil-spec design and construction
• Unique barrel recoil technology dissipates most recoil energy
• Semi automatic design
• Magazine fed for ease of reloading
• Bullpup design for compact size and optimum weight distribution
• Sub-MOA with match grade ammunition
• Barrel is capable of retracting for transportation with an overall length of just 35.98″
• Lightweight, just 23 lbs


Caliber.50 BMG
Effective Range2000m/2187 Yards
Magazine Capacity5
Method of OperationLong Recoil Action
Operating Length1114mm/43.85″
Transportation Length914mm/35.98″
Barrel Length730mm/28.74″
Barrel Twist1 in 15
Picatinny Rail built-in Elevation10.6 mils/36.2 MOA
Weight, Empty10.5kg/23.14 lbs
Weight, Operating13kg/28.66lbs

Contact Us

Due to unforeseen circumstances, SERO USA is no longer be importing the GM6 Lynx rifle, effective Immediately. For all warranty and purchase questions, please contact SERO Hungary directly:

Endre Szabo – endre.szabo.jr@sero.hu

Agnes Barti – agnes.barti@sero.hu