The Fuqua Precision Machining Spleen is a 5.56 muzzle device threaded 1/2x28, shown here in the HT finish. The part number indicates stainless steel construction. 1/2x28 is the standard thread for most 5.56 AR-15 barrels. Confirm your barrel thread before ordering. Specifications below are taken from the manufacturer part number and distributor listings.
- Brand: Fuqua Precision Machining (FPM)
- Model: Spleen
- Caliber: 5.56
- Thread pitch: 1/2x28
- Finish: HT
- Part number: SSPL-556-12X28-SS-HT
