Angstadt Arms HYD Buffer Kit – 9mm/40 S&W/45 ACP AR Pistol Caliber

The Angstadt Arms HYD Buffer Kit is engineered to manage blowback cycling in pistol-caliber AR platforms chambered in 9mm, 40 S&W, and 45 ACP. This hydraulic buffer system smooths the recoil impulse and reduces bolt carrier bounce, improving control during rapid strings and extending component life. It's a direct upgrade for shooters running suppressed or unsuppressed pistol-caliber carbines who want more consistent cycling and less felt recoil.

The kit includes a hydraulic buffer and spring assembly designed specifically for standard blowback AR lowers. Installation is straightforward—simply replace your existing buffer and buffer spring with this complete assembly. The hydraulic dampening system slows the bolt carrier group's rearward travel without impeding reliable function, making it compatible with a wide range of pistol-caliber uppers and barrel lengths.

• Type: Hydraulic buffer kit
• Compatible Firearms: AR-15 pistol-caliber builds (9mm, 40 S&W, 45 ACP)
• System: Standard blowback
• Finish: Black oxide
• Installation: Drop-in replacement for standard buffer and spring