The RSTA OTB (Over the Barrel) Silencer is suited to the shooter who wants the least amount of gas blowback in semi auto systems and the best sound suppression with minimal addition to weapon system length. Our over the barrel mounts are rock solid and provide minimal and repeatable point of impact shift. 

Additionally this mounting system reduces fouling due to its low back pressure design and tends to negate the need for tuning gas systems in semi auto systems for reliable operation. The RSTA also features our Patent Pending baffle technology which offers unparallelled reduction of sound both at the muzzle and at the ejection port in semi auto firearms for balanced, and optimized system performance. 

The RSTA is CNC machined, and Tig fusion welded for maximum thermal transfer and unparalleled strength and durability. The RSTA is manufactured from high strength, high temperature, corrosion resistant 17-4ph stainless steel. The RSTA suppressor features our flawless bore technology for maximum accuracy and fully blueprinted tolerances. 

Diameter: 1.47’’

Overall Length: 9.5’’

Length Added: 5.4’’

Weight: 21 ounces

Materials: High strength, high temp, corrosion resistant 17-4ph Stainless Steel 

Attachment: OTB Mounts 

DB Attenuation: 31DB (16" 308) (36-40db 18" 556) (39db 300blk 12")

Finish: High Temp Griffin Endura-Kote

Full Auto Rated: Yes

Caliber Ratings:

- .300 Winchester Magnum ammunition in barrels 20" OAL or longer

- 7.62x51mm and 6.5x47mm Lapua ammunition in barrel lengths down to 12"

- 7.62x39mm and 6.5SPC in barrels down to 8.5" long

300BLK/Whisper in barrels as short as 8"

In conjunction with 5.56mm 1/2x28 threaded mounts, the RSTA is rated for:

- 5.56x45mm ammunition and.all lesser calibers in barrels down to 7.5" (however over the barrel mounting and gas block positioning will probably reduce RSTA possibilities to 12.5")

Link to parts manufacturer