Item #:SRA9377
$0.33 per piece
Shipping: One flat fee of $9.95 per online order.
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Availability: Out of stock
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Quantity Limit:Only 2 SRA9377 allowed per customer. Duplicates will be canceled.
Read 8 Reviews

Product Information

Designed for Service Rifle competition in the M16A2/AR-15A2, our 22 caliber bullets have set an incredible number of new national records.  The 77 grain #9377 MatchKing® allows seating to an OAL that permits cartridges to be loaded into M16/AR15 magazines.
While they are recognized around the world for record-setting accuracy, MatchKing® and Tipped MatchKing® bullets are not recommended for most hunting applications.  Although MatchKing® and Tipped MatchKing® bullets are commonly used for varmint hunting, their design will not provide the same reliable explosive expansion at equivalent velocities in varmints compared to their lightly jacketed Hornet, Blitz or Varminter counterparts.

The #9377 bullet is available in a cannelured version in box sizes of 500 (#9377G) or 50 (#9377GT).  This bullet is also available moly-coated (#9377M).

This is not loaded ammunition.

This bullet requires a barrel twist rate of 1x8” or faster.


WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to -

Technical Notes

Ballistic Coefficient: 0.372

Read 8 Reviews - Average Rating: 5 stars

Great Bullet

By JUSTIN P. on Nov 18, 2020
These shoot extremely well at 200/300!

Sierra .224 77 gr Match King

By Brian K. on Nov 12, 2020
I use these bullets for shooting rapid fire sitting (200 yards), and rapid fire prone (300 yards). They work very well in my .223 AR15 Match rifle with RL15 powder. For rapid fire use they must be able to fit into a standard magazine and so must be seated quite deeply to keep OAL under 2.26".

Their ability to resist wind deflection at 300 yards is excellent. I could probably get by with a lighter bullet at 200 yards, but keeping the same bullet for both distances simplifies reloading and ammo management.

Great bullet

By Jonathon W. on Oct 21, 2020
Used when breaking in a Remington 700 Tactical 223. Grouped under a half inch @100y while breaking the barrel in. Many keyholes. Pressed them for Dad, and he wants more too. Very happy and ordering more.

Sierra 77gr 223 MK

By Brian C. on Jul 28, 2020
Great bullet for the AR.

You can get better but they cost a lot more

By David L. on Jul 10, 2019
Great bullets for the price you can get better but you will pay a lot more they are great for anyone who wants accuracy and affordability in one

great bullets

By James H. on Jul 09, 2019
Sierra's 77 SMKs are very consistent and reliable. Perfect for across the coarse shooting.

sierra 77gr hpbtt

By Frank J. G. on Jun 03, 2019
Well padded for shipping and newest sierra packaging.
Just opened and inspected and all as expected. THANKS, Graf's

Great Product/Great Service

By Dale S. on May 23, 2019
Great bullet. Use in all my AR loads out to 600yds. Always get excellent service from Grafs!!
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