Oceania Defense S-556-Samson 20 Suppressor
The 556 - 20 Samson is the latest cross flow design which takes the place of the original Samson as well as replaces the larger diameter 556-45. This is a Titanium suppressor designed to fit under the rail of a Samson or similar rail system on the AR15 type rifle in 556 caliber amunition. The Samson is designed to operate on semi auto SBR down to 12.5" barrels and has a thicker blast plate.
Preliminary in house SPL testing:
14.5" NEA AR15 using 55 grain M193 at 2991 FPS:
5 shots at muzzle with no suppressor and 4136 mic at 1.6 high over grass and 1m left of muzzle - 166.1
10 shots at muzzle with new ODL 556-20 Samson and 4136 mic at 1.6 high over grass and 1m left of muzzle - 134
10 shots at ear with new ODL 556-20 Samson and 4136 mic about 50mm right of my ear - 136
This can is built from Ti6Al4V Grade 5 which is 90%Titanium, 6% aluminium and 4% Vanadium using a selective laser melting process. This process provides a completely monolithic structure for added strength with minimal weight. The suppressor is then stress relieved, heat treated and nitrided to provide a yield strength of around 1000 MPA and 1200 UTS. The internal structures have a 65 Rock C surface hardness due to the nitriding which drops back to 39 over the next 28 microns which increases the baffle longivity.
This can is designed for semi auto rates of fire and is not FA rated.
Currently not available for sale in the USA.
Weight 164 grams
Overall Length 165mm
Overall Diameter 38mm
Internal Diameter 19.15mm
Thread 1/2" 28tpi RH
Overbarrel from Shoulder 20mm
Length Past Muzzle 130mm