WTS: Matech BUIS, MI SD handguard, KAC bubble level
KAC picatinny "anti-cant" bubble level. Like-new other than minor degradation of vial surface, due to age. $50 shipped.
Matech rear sight. Brand new. Even has factory literature. $70 shipped.
MI SD handguard. Modified into "gooseneck" style, with the top rail jutting out beyond the end of the handguard. Handguard ID big enough to overlap silencer. Spray-painted camouflage. $50 shipped.
Used Smith Enterprise Vortex flash hider 1/2x28 with external threads for Ops Inc Model 12 (AEM5/OCM5). $35 shipped.
Reproduction Sig 552 recoil springs. $40 each; shipped.
Email for pictures or questions. Payment methods accepted are CC+4%, PPf+f, personal check, or USPS MO. Will not ship until a week after deposit of personal check. Additional shipping fees incurred for AK, HI, WA, CA, and OR.
Willing to cut a deal, for anyone buying multiple things.This message has been edited. Last edited by: KSGM,
September 09, 2022, 11:13 AM
KSGM
I have produced a small run of Sig SG551 silencer adapters. The adapters use a Halo-style collar and pocket attachment interface, and are compatible with silencers threaded in 1.375x24, otherwise known as “HUB”. The adapters are CNC machined from 17-4 stainless steel, and salt bath nitrided.
In the interest of transparency, I want to make potential purchasers aware of an idiosyncrasy:
The HUB threads on the adapters are on the small side; this means there is a bit of wiggle when you are screwing the adapter into the silencer; the play obviously disappears when the unit is completely tightened. This phenomenon is consistent across all units and all silencers I have threaded the adapters into, to varying degrees, depending on the silencer manufacturer's thread tolerances.
Q&A:
Q: Will the adapter work on a 550 or 551/3 LB?
A: No. Those weapons use one of two possible flash hiders of NATO dimensions. Depending on which flash hider your rifle has, there may already be silencer options available.
Q: Can you produce an adapter that will work on a 550 or 551/3 LB?
A: Yes. The same design can be modified slightly, and applied to a 550 silencer adapter. However, I don't intend to invest in a run of 550 adapters in the near future.
Q: Will this adapter work with my (insert make/model of silencer)?
A: Only if it is threaded 1.375x24 in the back. If the silencer manufacturer states their silencer is threaded “HUB”, 1.375x24, or 1 3/8 x 24, it will work.
Q: Will this adapter work on the 551 with the longer barrel without the grenade gasket?
A: No. This adapter is for a proper 551 only. Dimensions of the flash hider should be as follows: Diameter of flash hider not to exceed .845" Length of flash hider ~1.650" Length of flash hider including taper down to barrel diameter ~1.950" Barrel diameter behind flash hider not to exceed .570"
$140.00 shipped. Email for pictures or questions. Payment methods accepted are CC+4%, PPf+f, personal check, or USPS MO. Will not ship until a week after deposit of personal check. Additional shipping fees incurred for AK, HI, WA, CA, and OR.This message has been edited. Last edited by: KSGM,