SHS one-piece bore up cylinder set for M4 Smith & Wesson Chin Strap

Chin Strap

Length: 10"

The USW A1 is fully customisable with a non-reciprocating optics rail mount on the upper and a lower 20mm rail for flashlights

Removable flip-up front and rear iron sights

The handguard is designed to fit the LayLax Giga Tec EVO lipo 7

SHS one-piece bore up cylinder set for M4 Smith & Wesson Chin StrapEssential part for upgrading your Airsoft Electric Gun AEG Durable cylinder with Polished Inner surface guarantee smooth action As always, upgrading AEG require necessary skill & technique to dissemble the gearbox, consult expertise if needed Package Includes: 1. Stainless Bore Up Cylinder Head 2. Bore Up Air Seal Nozzle 3. Bore Up Ventilation Piston Head 4. Bore Up Chromium Plating Cylinder Bore Up Cylinder Set need to be used with M120 ~ M170 AEG