retractable stock with easy access to the battery compartment

Compatible with button top 18650 rechargable battery

The special bottom of the magwell has a unique design to fit any magazine baseplate or HPA adapter

Integrated Weaver/Picatinny rail Style Mount

this frame has a full CNC 3 piece “advanced TM” hammer system

NcStar Picatinny Riser .410 Short Polarstar retractable stock with easy accessShort 1913 Picatinny Rail 0. 410H riser X 2. 2"L. Allows the user to raise their optic 0. 410 above their receiver height Picatinny rail for the desired optic height. Great for a better heads up shooting with night vision equipment. Height: 0. 410" Length: 2. 2" Weight: 1. 4 oz.