HLF XYL ARP9 Battery Extension Package includes: 1x 20MM Rail

Package includes: 1x  20MM Rail mount Red Dot Laser Sight with 2* batteries

and rear sling swivel for improved stability and battery access during intense battles

Applicable for buttstocks

Compatible with cp alpha king ak105 / lehui ak74u / JM gen12 ak74 / svd / 701 / STS AK74u gel ball blasters and AEG airsoft

Compatible with most ar-15 m4/hk416 gel blasters

HLF XYL ARP9 Battery Extension Package includes: 1x 20MM RailThis ARP9 Battery Extension to provide an additional 35mm of space for most AR toy gun batteries. Made with durable 3d print pla material, this extension is compatible with both xyl arp9 and hlf arp9 gel ball blasters and airsoft guns. Specifications: BrandL XYL Material: 3d print pla. Length: 35mm. COlor: black. Package includes: 1x arp9 battery extension.