Handy kits gather up all the small parts needed to complete a functional upper receiver. Eliminates the hassle of tracking down every component separately, including hard-to-find pins and springs, so you can start a custom build knowing you won’t be held up waiting for that one part you forgot to order. Select the stripped upper, barrel, gas block, flash hider, bolt/carrier, and handguard you want, then purchase the completion kit to fit the handguard style and gas system length. Each kit contains original factory parts, so you can install parts made by the manufacturer of your receiver. AR components from one manufacturer will fit another manufacturer’s receiver, but fitting may be required. Use Free Float (FF) kits with free-float forends that attach to the barrel nut and do not require delta ring handguard attachment system.
HIGH STANDARD – Parts manufactured to U.S. military specs and used in HSA-15 rifles and carbines. Kit includes ejection port cover, ejection cover hinge pin, ejection cover hinge clip, ejection cover spring, forward assist plunger, forward assist retaining pin, forward assist spring, gas tube, gas tube roll pin and crush washer.
AR-15, Issue:10, Page:034
Big Book Catalog, Issue:68, Page:037
SPECS: Carbine – 9¾" (24.8cm) gas tube length. Mid-Length – 11¾" (29.9cm) gas tube length.