M193 vs M855 Green Tip: Which 5.56 for the Range

Both are 5.56 NATO military-pattern loads. One has a steel tip that many ranges ban, and that fact alone decides more purchases than ballistics do.

Two military patterns, two different problems

M193 and M855 are the two names most people mean when they say "5.56 military ball." They are not the same load. M193 is the older pattern, a 55gr full metal jacket. M855 is the newer pattern, a 62gr bullet with a steel penetrator in the nose and a green paint mark on the tip, hence "green tip."

For this comparison the two products are Winchester's Lake City-pattern M193 55gr case and PMC's X-TAC 62gr green tip in a 420-round can. The Winchester product name nods to Lake City, the U.S. government ammunition plant associated with the pattern. The PMC product is an M855-style green tip sold in a heavy-duty ammunition can. Check each manufacturer's page for the exact specifications of the version you are buying.

Question 1: Will your range let you shoot it?

This is the question that decides the whole comparison, and it is not a ballistics question. Many outdoor and indoor ranges have rules about steel-core or steel-tipped ammunition. Reasons include damage to steel targets and backstops, the possibility of sparks in dry vegetation, and the practical difficulty of checking every round. A common enforcement method is a magnet: steel-tipped bullets stick to it.

So before you consider anything else, ask your range:

• Is steel-core or steel-tipped ammunition allowed?
• Is green tip M855 specifically allowed or banned?
• Are there rules on the targets you plan to shoot?

Ranges set their own rules, and they differ even within one state. If your range bans steel tips, the 55gr load is the natural choice and the question is over. If you shoot on private land or a range that allows green tip, the second question becomes relevant.

Question 2: What are you trying to practice?

M193 and M855 do different things at the range.

• M193 55gr is a conventional lead-core FMJ. It is the pattern many AR-15 shooters think of as the default for practice, and it works in rifles with a range of barrel twists.
• M855 62gr is heavier and has a different bullet shape. If you want your practice ammunition to resemble the load some military or duty rifles use, the green tip is closer. It also matters if you run a rifle whose barrel is designed for 62gr bullets.

Beyond that, the best advice is not to over-read either bullet. Neither is a precision round in the sense that match ammunition is. Both are general-purpose military-pattern ball, and what matters at a range is that they feed and fire reliably.

Question 3: What does your barrel twist want?

Bullet weight and barrel twist interact. A bullet spins to stay stable in flight; a heavier, longer bullet needs more spin. Barrels are cut with a twist rate, and the number on your barrel or in the rifle manufacturer's specifications tells you what it is designed for.

The practical takeaway:

• Check your rifle's twist rate. The marking is often on the barrel near the gas block or on the manufacturer's spec page.
• A faster twist generally handles heavier bullets more comfortably. A slower twist is traditionally associated with lighter bullets.
• If your rifle's twist rate is unclear, ask the manufacturer before you buy a case.

The related 5.56 vs .223 vs .223 Wylde guide covers chambers and marking, which is the other half of the compatibility story.

Question 4: What are the legal questions?

Green tip ammunition has been the subject of regulatory attention over the years, and the details are subtle enough that the site has a dedicated page, are green tip bullets legal. In short, the legal picture depends on how ammunition is classified and where you live, and it can change. This page does not give legal advice. If you are unsure, check with the manufacturer and your local authorities before you buy.

Packaging: case versus can

The product names suggest two ways to buy. The Winchester item is listed simply as a case, so check the listing for the round count and how it is packed, while the PMC item is a 420-round heavy-duty can. A can is a rigid container built to be reused, which suits storage and carrying to the range. If you buy a case, plan where the ammunition will live afterward.

See steel vs brass ammo if you are weighing case materials too.

Housekeeping for a 5.56 shooter

• Mark your magazines and your boxes. Mixed lots and mixed loads make troubleshooting harder.
• Check your range's backstop and target rules each time you visit; they can change.
• Clean on a schedule. Military-pattern ammunition is generally plain ball, but any rifle benefits from regular cleaning and inspection of the bolt and gas rings.
• Keep rounds you are unsure about out of your carry or defense rotation entirely. Range ball is for the range.

Pick M193 if, pick green tip if

• Pick the M193-pattern 55gr case if your range has any restrictions on steel, you want the simplest and most broadly accepted practice load, or you do not know your range's rules yet.
• Pick the X-TAC green tip can if your range allows steel-tip ammunition, you want M855-style practice, and you appreciate the reusable can.
• Pick neither yet if you cannot answer the range question, your rifle's chamber marking is unclear, or you are not sure of your local rules. A phone call costs nothing.

If you only want a general-purpose, reliable AR-15 load, you do not have to choose between military patterns at all. A commercial .223 or 5.56 FMJ with a plain lead core is a fine range round, and the wider 5.56 and .223 picks cover that option.

Editorial note: This is an independent editorial overview built from manufacturer specifications and publicly available information. We have not performed hands-on testing of the products discussed, and nothing here is a performance guarantee. Verify specifications, compatibility and legality for your own situation.

Affiliate disclosure: Some links on this page are affiliate links to Ammunition Depot. We may earn a commission if you buy through them, at no extra cost to you. Our editorial choices are not influenced by commissions. Check current price, stock and specifications directly with the retailer.