GSI Hop-up Arm for APFG (MCX / MPX) 68rd ✅ Superior Expandability – Equipped

✅ Superior Expandability – Equipped with built-in Picatinny rails

LCK-74MN / LCK-74M / LCKS-74M / STK-74 / LCK-74 / LCKS-74 / LCKM / LCKM (Stainless Steel) / LCKMS / LCKMMS / LCKM Economy / LCKM-63 / G-03 / G-03M / TX-5 / TKMS / TIMS / ZKS-74M / MRK-74 / M-LOK LCKM

a full 360 degrees of adjustable freedom and 24 different secure positions

Other features include an ambidextrous safety selector

GSI Hop-up Arm for APFG (MCX / MPX) 68rd ✅ Superior Expandability – EquippedGSI Hop up arm for APFG MCX, increases accuracy (hop up tensioner included) The hop up arm included as standard in the APFG MCX series has a lot of left right play, which makes bullets not come out consistently. To solve this problem, GSI improved the play of the hop up arm for the MCX and matched it with a dedicated hop up rubber and hop up tensioner to create the optimal bullet collection. This precision engineered upgrade ensures your shots are