Silencer or Auto tracer installation Adapter for VFC & KWA MP7A1
  +11mm ~ -14mm for GBBR & AEG 
Precision CNS processed for high-quality
Material:  Steel
 
• EAN & SKU: 8809899600092, SKU:  AP21-VMP7A
• Product Dimension & Weight: 1.36(L)x0.55(W)x0.55(H) inch 0.2 oz
• Package Weight & Dimension:  3.35(L)x 3.33(W) x 0.56(H) inch 0.56 oz 
• Made in Korea