Radical Defense556-GPS
5.56mm / .223 suppressor · RD KFM-MG QD interface · specs and compatibility from the manufacturer
Notable features
- Haynes 282
- Full-Auto Rated
length
7.5″
weight
26oz
MSRP
$1,499
length
7.5″
weight
26oz
calibers
5.56 | 6.5
material
Haynes 282
interface
RD KFM-MG QD
MSRP
$1,499
- Overall length
- 7.5″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 2.5″–9.75″
- Median
- 6.12″
- Diameter
- 1.75″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 0.98″–2.2″
- Median
- 1.57″
- Weight
- 26 oz
- Class
- 5.56mm / .223
- n
- 328
- Range
- 1.7 oz–27 oz
- Median
- 13 oz
- Material
- Haynes 282
- Max caliber
- 5.56mm
- Base interface
- RD KFM-MG QD
- Front cap
- Fixed
- Full-auto rated
- Yes
- MSRP
- $1,499
- Class
- 5.56mm / .223
- n
- 292
- Range
- $199–$1,955
- Median
- $899
Longer than most 5.56mm / .223 suppressors
Length compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Wider than most 5.56mm / .223 suppressors
Diameter compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Heavier than most 5.56mm / .223 suppressors
Weight compared against the 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Pricier than most 5.56mm / .223 suppressors
MSRP compared against the 292 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
- Base interface
- RD KFM-MG QD
- Front cap
- Fixed
This suppressor's RD KFM-MG QD takes no separate mount. 1 muzzle device in our catalog attach to it directly.
Which ones fit your barrel and host?
Check in the BuilderManufacturer claim
- Engineered with RD’s proprietary Breathable Technology, the suppressor reduces recoil, toxic gas exposure, and back pressure—allowing for smoother cyclic rates and cleaner operation in full-auto or sustained semi-auto fire.
- Designed for 5.56mm light machine guns, the 556-GPS delivers reliable, hard-use suppression for dismounted infantry, direct action units, and assault gun teams.