Regular Serial numbers - Highest serial number shipped for the year. Regular numbers began with 5,000 which shipped October 15, 1932.

Note the serial number research is a work in process and these numbers are the best estimates as of the revision data of this page. Although it appears that the guns were generally assembled in numerical sequence, the shipments were not and some guns remained in inventory for weeks, months, or even years between assembly and shipment. The only valid way to determine the shipping date is by researching the individual serial number in the factory records.

Mathcounts National Sprint Round Problems And Solutions ✦ Best Pick

For students aiming to excel at the national level in 2026, understanding the structure of the National Sprint Round and mastering its problems is crucial. What is the MATHCOUNTS National Sprint Round?

Find the number of ordered pairs of positive integers for a given large integer The Insight: Standard algebraic manipulation yields n2n squared to both sides allows for Simon's Favorite Factoring Trick:

. Recognizing scaling factors eliminates the need to calculate absolute areas. Case Study 3: The Combinatorial Expected Value Mathcounts National Sprint Round Problems And Solutions

. A second, smaller circle is drawn tangent to the incircle and to the sides ABcap A cap B BCcap B cap C

Let’s count numbers with all digits non-zero (otherwise product=0 divisible by 8). So restrict to digits 1–9. For students aiming to excel at the national

So we must be careful: The complement (not multiple of 8) requires product ≠0 and < 2³ twos.

Since there is no penalty for an incorrect answer, you must leave no blanks on your answer sheet. If you are running out of time on a difficult geometry problem, draw a highly accurate diagram to scale using your scratch paper and visually estimate the answer. For algebraic or numerical problems, look for patterns or test small, simple numbers to make an educated guess. Sanity Checking Recognizing scaling factors eliminates the need to calculate

Because calculators are banned, strong arithmetic agility is non-negotiable. Memorize squares up to 30, cubes up to 12, and small powers of 2, 3, and 5. Master quick estimation techniques and shortcuts like the right-triangle inradius formula highlighted in Example 3. The "Three-Pass" Pacing Strategy

The binomial coefficient is calculated as:

23S=13+19+127+181+…two-thirds cap S equals one-third plus one-nineth plus 1 over 27 end-fraction plus 1 over 81 end-fraction plus …

Notes:
1. 3,000,000 This 9211 Victor shipped 1 March, 1974
2. Last gun in regular series shipping in 1975 This 9247 Supermatic Trophy shipped 28 August, 1975.
3. Last serial number in regular series excluding the special Victor S/N 3,000,000 This 9329 Double Nine shipped 26 October, 1976.
4. First G prefix guns to assembly 8 July, 1975, packed 14, July, shipments began 21, July, 1975
5. Last? Leisure Group G prefix 12 Aug, 1977.
6. G 19,299 - G 19,319 are all 9201 Sport Kings 20 guns all shipped March 1978.
7. First High Standard Inc. G20,000 - G 20,105 (103 guns) are all 9244 Supermatic Citations. G 20,106 - G 20,233 (116 guns) all are 9201 Sport Kings
8. G six digit are all 9200 or 9201 Sport Kings Note right most digit is always a zero so the serial number increments by 10's not 1's 254 guns. One exception to      numbering is G 162,011. All shipped October 1978
9. First ML prefix serial number. to production 7/22/75, packed 7/26/75, shipped 7/25/75. Note records show MIL prefix from MIL 01,001 to MIL 01,099 and    ML from ML 01,100 on. This needs to be verified by observation of actual guns.
10. Last Hamden ML prefix 14 December, 1976
11. EH 00,001 9217 First East Hartford gun 16 June, 1977
12. First East Hartford ML prefix pistol. First shipments of ML prefix guns 17 June, 1977.
13. Last Leisure Group ML prefix 21 Dcember 1977.
14. First pistols with ML prefix made for High Standard, Inc. Mixed production dates between 2 February, 1978 and 9 November, 1978 with one pistol   manufactured 16 February, 1980.
15. First pistols with ML prefix made for High Standard, Inc 21 March, 1978
16. Last regulsr ML prefix gun 15 September, 1981.
17. Gun is a single serial number separated from rest of ML records. Shipped 5/22/1981
18. MLG prefix are all 9259 Sport Kings 123 guns. All shipped May 1980.
19. First SH serial number shipped 5/22/1981
20. Last SH gun 25 June, 1984, last observed shipment 28 July, 1984. Last SH serial number SH 34,075, Frames only SH 34,000-SH 34,075. Note overlap with   serial numbers of shipped guns. Frames to G. W. Elliott 13 November 1984
21. The early Model C pistols were in a separate serial number series beginning at 500 and ending at 3,116. Earliest shipment began December 1, 1936 with serial numbers 516, 523, and 525 latest shipment was 3,116 shipping on 10/3/1939.
22. The early Model A and D pistols were in a separate serial number series beginning at 500 and ending at 555. Numerous OPEN records. Earliest recorded shipment was April 6, 1938 and latest shipment was on 10/8/1939
23. The Model G .380 was also in a separate serial numebr series. The records run from 100 through 7,881 ut at least one survvoe is known with a serial number below 100. Shipments are not well ordered with respect to teh serial number. Shipment dates range from September 13, 1947 throuigh Late 1951 with a few outliers later. A few G .380's have serial numebrs in the regular serial number series between 328,161 and 329,430 all with a ship date of 7/26/1950.

Compiled by _ John Stimson, Jr.
Released ___ 30 March, 2002, Revised ___1 April, 2002, Revised ___25 Dec, 2003
Revised ___29 March, 2005, Revised ___9 October, 2005, Revised ___28 February, 2007
Revised ___1 May, 2012
© John J. Stimson, Jr. 2002, 2003, 2004, 2005,2006,2007,2008,2009, 2010, 2011, 2012

YEAR	Serial number	G prefix (5 digit)	G prefix (6 digit)	ML prefix (5 digit)	MLG prefix (5 digit)	SH prefix (5 digit)

1974	2,469,497 (1) 3,000,000	.	.	.	.	.
1975	(2) 2,500,810	(4) G 1,001 G 04,566	.	(9) ML 01,001 ML 06,747	.	.
1976	(3) 2,500,811	G 13,757	.	(10) ML 23,065	.	.
1977	.	(5) G 18,298	(8) G 160,000 G 162,590	(11) EH 0001 (12) ML 25,000 (13) ML 29,707	.	.
1978	.	(6) G 19,299 to G 19,319 & (7) G 20,000 G 20,223	.	(14) ML 29,708 ML 29,721 & (15) ML 30,000 ML 41,270	.	.
1979	.	.	.	ML 63,483	.	.
1980	.	.	.	ML 81,629	(18) MLG 20,224 MLG 20,408	.
1981	.	.	.	(16) ML 86,641 (17) ML 90,000	.	(19) SH 10,001 SH 18,446
1982	.	.	.	.	.	SH 25,964
1983	.	.	.	.	.	SH 31,558
1984	.	.	.	.	.	(20) SH 34,034