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Questions & Answers
What is the diameter of the barrel? Expert Answer

According to the manufacturer these are Government profile.

by Tom B, Gear Expert, October 19, 2021
Is this a1:7 barrel?

1 and 9 which to be honest shooting 55 Grains that going to be your best option

by Evan Truman, Verified Owner, September 30, 2020
Customer Reviews
Helpful Positive Review
Great entry level build by Snowknot, February 17, 2017
Installed this kit on an Aero Precision 2nd gen lower and everything fit great. If you have a few basic armorers tools it goes together fairly easily. MY only complaint is the trigger was a little difficult to install.
4/5 found this helpful
Helpful Positive Review
Not bad when I got all the parts by Bub, Verified Owner, January 9, 2021
The only reason this did not get 5 stars is because only upper reciever showed up. It was assembled but not lower parts kit, buffer/stock assembly. I spoke with OP and they spoke with delton. About 20 emails later and talking to delton who was great...
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2/2 found this helpful
Helpful Positive Review
Opticsplanet by Gary, January 29, 2022
Complete kit came when and as promised.The construction videos and instructions were well written.This being my first took about 6 six hours. I will be building another and will order here. My experience with this company has been great and would rec...
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1/1 found this helpful
Most Recent Reviews
Fun Retro Build. by Toophless, Verified Owner, January 19, 2025
I installed the fixed stock version on a PSA lower. Very nice kit. I didn't use all of the components but everything looked well made. Came with a better grip than expected. A rubberized one instead of the hard plastic. I went with the heavy barrel o...
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Read All 4 Reviews

Product Discontinued by Manufacturer

Del-Ton Pre-Ban 5.56x45mm NATO Heavy Profile Rifle Complete Upper Receiver has been discontinued by Del-Ton and is no longer available. Our product experts have helped us select these available replacements below.

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Del-Ton Pre-Ban 5.56x45mm NATO Heavy Profile Rifle Complete Upper Receiver

This kit includes all of the you need to go with your lower. Del-Ton brings this rifle kit with a complete upper assembly that has been head-spaced and test-fired. Includes all buttstock components, and a complete lower parts kit. Available in an 11.5" pistol length, 16" carbine length, 16" mid-length, or 20" rifle length. If you're ready to do an AR build or re-build, this Del-Ton Pre-Ban 5.56x45mm NATO Heavy Profile Rifle Kit is just what you need for out-of-the-box assembly.image

Lower and/or magazines not included.

Features of Del-Ton Pre-Ban 5.56x45mm NATO Heavy Profile Rifle Complete Upper Receiver:

  • A3 Flat top with M4 Feed Ramps
  • Buttstock in M4 5-position
  • Chrome-Lined Carrier Interior
  • Phosphate 8620 Steel Carrier Assembly
  • Chrome Moly Vanadium Barrel

Package Contents:

  • Del-Ton Pre-Ban 5.56x45mm NATO Heavy Profile Rifle Complete Upper Receiver
  • Buttstock w/ Components
  • Complete Lower Parts Kit
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Last updated 2026-05-15 UTC.