SilencerCo AC1361 Thread Protector .578x28 45 ACP Black Steel

The SilencerCo AC1361 Thread Protector shields threaded barrels from damage while maintaining the clean profile of your AR-platform firearm. This precision-machined component prevents thread damage during transport and storage when suppressors aren't attached.

What Makes This Different

Unlike generic thread protectors that can work loose under recoil, the AC1361 features SilencerCo's proprietary thread engagement design for secure attachment. The black nitride finish resists corrosion better than standard phosphate coatings. Machined from 4140 steel rather than aluminum, it withstands impacts that would damage softer alternatives.

Key Features

• Precision .578" x 28 TPI threading matches AR-platform barrels chambered in 45 ACP
• 4140 steel construction provides superior durability over aluminum alternatives
• Black nitride finish offers enhanced corrosion resistance and reduced glare
• Low-profile design maintains original barrel aesthetics
• Knurled exterior allows hand-tightening without tools
• Compatible with SilencerCo suppressors and other .578x28 threaded accessories
• Prevents debris accumulation in barrel threads during storage

The AC1361 maintains zero shift consistency when removed and reinstalled, critical for precision applications. Competition shooters rely on consistent thread protection between stages. Law enforcement armories use these protectors to maintain weapon readiness during extended storage periods. The steel construction handles the higher pressures and temperatures of 45 ACP cartridges without deformation.

Technical Specs

• Thread Pitch: .578" x 28 TPI
• Material: 4140 steel
• Finish: Black nitride
• Compatible Calibers: 45 ACP
• Platform: AR-15/AR-10 style rifles
• Installation: Hand-tightened with knurled grip
• Manufacturer: SilencerCo
• Model: AC1361

SilencerCo's reputation for precision manufacturing ensures consistent thread engagement without cross-threading risks. The AC1361 represents essential protection for threaded barrels in professional and civilian applications. Quality thread protection prevents costly barrel repairs and maintains suppressor mounting accuracy.