Bushmaster AR-15 A3 Flat-Top Upper Assembly 7.62x39mm 1 in 10" Twist 16" Barrel Chrome Lined Chrome Moly Matte with A2 Front Sight, Flash Hider, 30-Rnd Magazine

Product #: 910345 Bushmaster #: F1009521
Please Sign In or Create an Account to use this feature.
  • Information
This drop-in A3 upper will attach to virtually any standard AR-15 lower receiver. The economical and hard-hitting 7.62x39 Russian is perfect for hunting or target shooting, this flattop upper features a 16", chrome lined M4 profile barrel, A2 flash hider, M4-style polymer handguards, bayonet lug and standard front sight base. Includes one 30-round magazine.

AR-15 Hammer and Trigger Pin Dimensions:
  • Some Colt AR type rifles have been manufactured with hammer and trigger pins and holes which are approximately .176" in diameter. These are referred to as "large pin" Colts. This was done to eliminate the chances of someone putting M16 fire control parts into an AR receiver. This is not found in all Colt models, just some.
  • All other AR type rifle manufacturers have stayed with the .156" diameter hammer and trigger pins and holes, or "small pin" which is the same spec used in all military M16 rifles.
  • Measure your pins or the holes in your lower receiver to determine if you have a "small" or "large" hole Colt AR
  • Was this information helpful? Yes No

    Thank you! Your valuable feedback helps improve our product information and offering.

    Help Us Improve

    Please enter the missing required fields:

      Do you accept our terms and conditions? *
      Know someone who may like this? Email this Page to a Friend

      Customer Reviews

      The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.

      NOTE: Prices, specifications and availability are subject to change without notice. We reserve the right to correct typographic, photographic and/or descriptive errors.