Aim7 Gen 2 Suppressor Piston (BPISTIN Standard 10-Notch) 17-4 Stainless Steel
1/2 x 28 TPI (CZ, 1911, FNH, S&W 9MM,22LR)
1/2 x 36 TPI (9MM)
5/8 x 24 TPI (.30 CAL)
9/16 X 24 TPI (.40 CAL)
.578 X 28 (.45ACP)
M13.5 X 1LH (GLOCK, STYER, SIG, HK, B&T 9MM)
Description
Aim7 Gen 2 Suppressor Piston (BPISTIN Standard 10-Notch) 17-4 Stainless Steel
Upgrade and optimize your handgun suppressor system with the precision-engineered Aim7 Gen 2 Suppressor Piston. Machined in a single Swiss CNC turning setup from rugged 17-4 PH stainless steel, these booster pistons virtually eliminate tolerance stack-up to deliver exceptional concentricity, repeatable point-of-impact, and reliable semi-automatic cycling on tilt-barrel handguns.
Built to the industry-wide BPISTIN standard (Booster Piston, Industry Standard Ten Index Notch), each piston is heat-treated and finished in a slick QPQ Black Nitride treatment for maximum surface hardness, galling prevention, and carbon resistance across high-pressure calibers.
Key Features & Engineering
- Single-Setup Swiss CNC Machining: Precision-turned in a single operation to ensure perfect concentricity between barrel threads, piston face, and booster alignment bore.
- 17-4 PH Stainless Steel: Solid heat-treated stainless construction stands up to violent chamber pressures, intense thermal cycles, and repetitive mechanical travel.
- BPISTIN 10-Notch Indexing: Incorporates 10 precision indexing notches for easy point-of-impact (POI) clocking and adjustment across compatible booster housings.
- QPQ Black Nitride Treatment: Case-hardened finish delivers low surface friction for silky-smooth slide action while resisting corrosive propellant gases.
- Broad Caliber & Thread Versatility: Available across all standard US and European muzzle pitches for 9mm, .45 ACP, .40 S&W, .300 BLK, and rimfire hosts.
Available Thread Pitch Options
| 1/2×28 TPI | Most 9mm handguns (CZ, 1911-9, FN, S&W, aftermarket barrels) & .22 LR |
|---|---|
| M13.5×1 LH | European metric 9mm hosts (Factory Glock, SIG Sauer, HK, Steyr, B&T) |
| .578×28 TPI (37/64×28) | Standard .45 ACP platforms (1911, FN 545 / FNX-45, Glock .45 aftermarket) |
| 5/8×24 TPI | .30 Caliber platforms, .300 Blackout subsonic handgun/PCC setups |
| 9/16×24 TPI | .40 S&W platforms & select .45 ACP configurations |
| 1/2×36 TPI | Colt-pattern 9mm PCC and specialized 9mm threaded barrels |
System & Suppressor Compatibility
| SilencerCo | Hybrid, Octane Series, Omega K Series (9K / 45K), Omega 36M |
|---|---|
| Griffin Armament | Revolution Series (Resistance, Optimus 9, Bushwacker) |
| Dead Air | Odessa 9 |
| YHM & ECCO Machine | Yankee Hill Machine (YHM) Booster Assemblies, ECCO Machine Phoenix Cans & Booster Systems |
| Aim7 Boosters | Direct drop-in replacement for Aim7 1.375×24 HUB Nielsen Booster assemblies |
Maintenance Tip: To ensure consistent slide cycling and prevent carbon binding, regularly clean and apply a thin film of high-temperature gun grease or CLP to the piston body, O-rings, and booster housing sleeve.
Trademark Notice: “SilencerCo,” “Griffin Armament,” “Dead Air,” “YHM,” and “ECCO Machine” are registered trademarks of their respective owners. The AIM7 Gen 2 Piston is an aftermarket component manufactured independently by AIM7 for cross-compatibility with BPISTIN standard housings and is not affiliated with or endorsed by these manufacturers.
Due to California Assembly Bill 1263 (AB-1263) compliance regulations and online sales verification requirements for firearm accessories, WE DO NOT SHIP THIS ITEM TO CALIFORNIA ADDRESSES. Any orders placed with a California shipping address will be canceled immediately.
Important Disclosures & Compliance
- Classification Notice: THIS ITEM IS NOT A SILENCER, SUPPRESSOR, OR REGULATED NFA DEVICE. It is strictly an unbaffled mechanical booster piston sold exclusively as a replacement cycling component for Nielsen decoupling assemblies on semi-automatic tilt-barrel handguns. It contains no acoustic dampening chambers or sound-muffling components, and does not reduce or diminish the acoustic report of a firearm.
- Safety & Alignment: Always verify bore concentricity and projectile clearance with an armorer’s alignment rod before firing. Installation by a qualified gunsmith or experienced armorer is strongly recommended. Verify firearm is completely unloaded and cleared before servicing.
- Legal & Export Compliance: Buyer assumes all responsibility for compliance with all federal, state, and local firearms laws and regulations. Strictly subject to U.S. export regulations (ITAR/EAR)—U.S. sales only.
- California Proposition 65 Warning: This product may contain trace chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Additional information
| Thread Pitch: | .578X28, 1/2 x 28 TPI, 1/2 x 36 TPI, 5/8 x 24 TPI, 9/16X24, M13.5X1LH |
|---|
