Threading Guide

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THIS THREADING GUIDE CONTAINS DATA FOR THREADING FIREARM BARRELS THAT WILL BE COMPATIBLE WITH

ALL CURRENT PRODUCTION ADVANCED ARMAMENT SILENCERS AND MUZZLE DEVICES. MANY OF THE THREAD

SPECIFICATIONS HEREIN WILL ALSO BE COMPATIBLE WITH OTHER MANUFACTURER'S SILENCERS AND MUZZLE

DEVICES. IT IS THE RESPONSIBILITY OF THE READER TO DETERMINE IF THE SPECIFICATIONS IN THIS THREADING

GUIDE WILL WORK WITH OTHER MANUFACTURER'S PRODUCTS. ADVANCED ARMAMENT DENIES ANY LIABILITY FOR

PROPERTY DAMAGE, PERSONAL INJURY, AND/OR DEATH CAUSED BY INCOMPATIBILITY BETWEEN THE THREAD

SPECIFICATIONS IN THIS GUIDE AND ANOTHER MANUFACTURER'S PRODUCTS.

ALL MUZZLE PROFILING AND THREADING SHOULD BE PERFORMED IN A LATHE.

ALL THREADS AND COAXIAL FEATURES MUST ALIGN CONCENTRICALLY WITH THE BORE AXIS OF THE BARREL. A

MISMATCH OFTHE BARREL BORE AND SILENCER/MUZZLE DEVICE MAY LEAD TO PROPERTY DAMAGE, PERSONAL

INJURY, AND/OR DEATH.

THE BARREL THREADS MUST BE MACHINED TO THE SPECIFICATIONS IN THIS THREAD GUIDE. THE USE OF AN

IMPROPERLY THREADED BARREL WITH AN ADVANCED ARMAMENT SILENCER MAY LEAD TO PROPERTY DAMAGE,

PERSONAL INJURY, AND/OR DEATH.

IF THE HOST FIREARM BARREL IS SHORTENED, IT WILL BE NECESSARY TO RE-CROWN THE MUZZLE FACE.

FAILURE TO RECROWN THE MUZZLE FACE CAN RESULT IN AN UNSTABLE PROJECTILE LEAVING THE MUZZLE

WHICH CAN RESULT IN PROPERTY DAMAGE, PERSONAL INJURY, AND/OR DEATH.

IF THERE ARE ANY QUESTIONS PERTAINING TO THE INFORMATION FOUND IN THIS THREAD GUIDE, PLEASE

CONTACT ADVANCED ARMAMENT AT 770-925-9988.

TITLE:

SIZE:

"B"

PART

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1 OF 19

THREAD GUIDE

1:1

MLS

03/13

PROPRIETARY AND CONFIDENTIAL

THE INFORMATION CONTAINED IN THIS DRAWING IS THE

SOLE PROPERTY OF ADVANCED ARMAMENT

CORPORATION. ANY REPRODUCTION IN PART OR AS A

WHOLE WITHOUT THE WRITTEN PERMISSION OF

ADVANCED ARMAMENT CORPORATION IS PROHIBITED.

REV:

DATE:

DRAWN

BY:

Advanced Armament Corp.

2408 TECH CENTER PARKWAY, SUITE 150

LAWRENCEVILLE, GA 30043 - 770-925-9988

WWW.ADVANCED-ARMAMENT.COM

ADVANCED ARMAMENT

MUZZLE THREADING GUIDE

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ANGLES

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FILLET RADII 0.005-0.010

BREAK EDGE 0.005-0.010

SURFACE FINISH

125

UNLESS OTHERWISE SPECIFIED

DIMENSIONS ARE IN INCHES

GENERAL SPECIFICATION FOR

SMALL ARMS AND AIRCRAFT

ARMAMENT SUBSYSTEMS

(MIL-W-13855) APPLIES.

ASME Y14.5M-1994 APPLIES.

Summary of content (19 pages)

PAGE 1
8 D 7 6 5 4 2 3 1 D 1. THIS THREADING GUIDE CONTAINS DATA FOR THREADING FIREARM BARRELS THAT WILL BE COMPATIBLE WITH ALL CURRENT PRODUCTION ADVANCED ARMAMENT SILENCERS AND MUZZLE DEVICES. MANY OF THE THREAD SPECIFICATIONS HEREIN WILL ALSO BE COMPATIBLE WITH OTHER MANUFACTURER'S SILENCERS AND MUZZLE DEVICES. IT IS THE RESPONSIBILITY OF THE READER TO DETERMINE IF THE SPECIFICATIONS IN THIS THREADING GUIDE WILL WORK WITH OTHER MANUFACTURER'S PRODUCTS.
PAGE 2
8 5 6 7 0.550 MINIMUM FOR SHOULDERING BEHIND THREADS D 4 0.56 MINIMUM PROTRUSION FROM SLIDE 2 3 1 0.5000-28 SPECIAL MAJOR Ø 0.4970 ±0.0030 PITCH Ø 0.4758 ± 0.0010 0.003 A 0.450 D 0.0005 A HOLD MUZZLE FACE PERPENDICULAR TO BORE AXIS IF SHOULDERING ON THE MUZZLE. A C C A 0.025 X 45° 0.0005 A HOLD THIS SURFACE PERPENDICULAR TO BORE AXIS IF SHOULDERING BEHIND THE THREADS. B 0.400-0.438 FOR INDEXING ON SHOULDER BEHIND THREADS 0.460 FOR INDEXING ON MUZZLE FACE.
PAGE 3
8 7 5 6 4 2 3 1 4.91 A A D D THREAD (SEE CHART) MAJOR Ø (SEE CHART) PITCH Ø (SEE CHART) MINOR Ø (SEE CHART) 0.003 A C C +0.00 0.33 - 0.01 0.0005 A 0.060 NOTES: .025 X 45° THIS THREAD GUIDE IS FOR FULL SIZED (NOT COMPACT) 9mm AND .40 AUTO BERETTA 92/M9 AND TAURUS PT-92/99 BARRELS. B B THREAD RELIEF (SEE CHART) DETAIL A SCALE 6 : 1 A THREAD MAJOR Ø PITCH Ø MINOR Ø THREAD RELIEF Ø 0.5000-28 SPECIAL 0.4970 ± .0030 0.4758 ± .0010 N/A 0.450 +0.000/-0.005 Advanced Armament Corp.
PAGE 4
8 5 6 7 4 +0.02 0.62 - 0.00 D 0.100 MAX TO FIRST FULL THREAD 2 3 1 +0.014 0.025 - 0.000 X 45 D A 0.563 MINIMUM DIAMETER C C A DETAIL A SCALE 8 : 1 0.0005 A B 0.5000-28 SPECIAL MAJOR Ø 0.4970 ±0.0030 PITCH Ø 0.4758 ± 0.0010 .003 A B +0.000 R0.021 - 0.010 0.005-0.010 X 45 NOTES: A 1) THIS THREAD GUIDE DETAILS A SPECIAL 1/2-28 THREAD FOR 5.56mm/.223 BARRELS.
PAGE 5
8 5 6 7 4 +0.02 0.62 - 0.00 D 0.100 MAX TO FIRST FULL THREAD 2 3 1 +0.014 0.025 - 0.000 X 45 D A 0.700 C C A DETAIL A SCALE 8 : 1 0.0005 A B 0.5000-28-UNEF-2A MAJOR Ø 0.4989-0.4924 PITCH Ø 0.4757-0.4720 MINOR Ø 0.4602-0.4488 .003 A B R0.005 MAX. R. 0.005-0.010 X 45 NOTES: A 1) THIS THREAD GUIDE DETAILS A BARREL MUZZLE PROFILE WITH 1/2-28-UNEF-2A THREADS AS FOUND ON M4 STYLE RIFLES. THIS THREAD PROFILE IS COMPATIBLE WITH ALL AAC MUZZLE DEVICES. Advanced Armament Corp.
PAGE 6
8 7 5 6 4 2 3 1.875 HOLD Ø0.745 ±.003 TO THIS POINT 1 0.0005 A HOLD THIS PERPENDICULARITY FOR AAC SPR-M4 MUZZLE BRAKE. A D D A 0.745±0.003 +0.02 0.62 - 0.00 C C +0.014 0.025 - 0.000 X 45 0.100 MAX TO FIRST FULL THREAD DETAIL A B B 0.0005 A HOLD THIS PERPENDICULARITY FOR AAC SPR-M4 FLASH HIDER. 0.005-0.010 X 45 NOTES: A R0.005 MAX. R. 1) THIS THREAD GUIDE DETAILS A BARREL MUZZLE PROFILE WITH 1/2-28-UNEF-2A THREADS AS FOUND ON M4 STYLE RIFLES.
PAGE 7
8 5 6 7 4 2 3 1 0.56 MINIMUM PROTRUSION FROM SLIDE .025 X 45° D D A 0.530 MIN. +0.000 0.450 - 0.005 C C A DETAIL A SCALE 8 : 1 0.0005 A 0.438-0.625 THREAD (SEE CHART) MAJOR Ø (SEE CHART) PITCH Ø (SEE CHART) MINOR Ø (SEE CHART) 0.003 A B B THREAD MAJOR Ø PITCH Ø MINOR Ø THREAD RELIEF Ø 2X R0.016 0.005 X 45 0.060 0.5000-32-UN-2A 0.4990-0.4930 0.4787-0.4752 0.4652-0.4549 0.450 +0.000/-0.005 0.5000-36-UNS-2A 0.4990-0.4935 0.4810-0.4777 0.4689-0.4596 0.450 +0.000/-0.
PAGE 8
7 5 6 4 2 3 1 C 0.0005 A A NOTES FOR M14.5 X 1 LEFT HAND THREAD: 1) 0.625" MINIMUM RECOMMENDED DISTANCE BETWEEN MUZZLE AND SLIDE FOR H&K USP SERIES AND GLOCKS. 2) MINUMUM BARREL DIAMETER - Ø14.5mm (0.571") D 0 1) 0.625" MINIMUM RECOMMENDED DISTANCE BETWEEN MUZZLE AND SLIDE FOR H&K USP SERIES, GLOCKS, AND WALTHER P99/PPQ. 2) 0.580" MINIMUM RECOMMENDED DISTANCE BETWEEN MUZZLE AND SLIDE OF SIG 226, 228, 229. 3) MINIMUM BARREL DIAMETER - Ø13.5mm (0.531") 0.109 NOTES FOR M13.
PAGE 9
8 5 6 7 4 THREAD MAJOR Ø PITCH Ø MINOR Ø THREAD RELIEF Ø 0.56 MINIMUM PROTRUSION FROM SLIDE .025 X 45° D 2 3 1 0.5625-24 SPECIAL .5625-28 SPECIAL 0.5595 ± 0.0030 0.5595 ± 0.0030 0.5344 ± 0.0010 0.5383 ± 0.0010 N/A N/A 0.500 +0.000/-0.005 0.508 +0.000/-0.005 D A DETAIL A SCALE 8 : 1 0.0005 A C THREAD RELIEF (SEE CHART) 45° 0.005-0.010 X 45 0.06 HOLD THIS PERPENDICULARITY IF SHOULDERING ON MUZZLE FACE A THREAD (SEE CHART) MAJOR Ø (SEE CHART) PITCH Ø (SEE CHART) MINOR Ø (SEE CHART) 0.
PAGE 10
8 5 6 7 4 2 3 1 0.005-0.010 X 45 0.06 2X R0.016 D D 45° 0.65 MINIMUM PROTRUSION FROM SLIDE 0.56 .025 X 45° A C A DETAIL A SCALE 8 : 1 0.0005 A 0.582 0.590 C B B 0.38 0.530 .5781-28 SPECIAL MAJOR Ø 0.5751 ± 0.0030 PITCH Ø 0.5539 ± 0.0010 0.003 A NOTES: 1) THIS THREAD CAN BE USED FOR A .45 AUTO BARREL. 2) THIS IS THE BEST THREAD FOR MOST 1911 BARRELS, SIG .45 AUTO PISTOLS, AND SPRINGFIELD XD BARRELS. A 3) THIS THREAD PROFILE IS DESIGNED TO INDEX ON THE MUZZLE FACE.
PAGE 11
8 5 6 7 4 2 3 1 0.65 MINIMUM PROTRUSION FROM SLIDE +0.01 0.44 - 0.00 D D .025 X 45° 0.0005 A A DETAIL A SCALE 8 : 1 0.582 0.590 C C A 45° 0.530 .5781-28 SPECIAL MAJOR Ø 0.5751 ± 0.0030 PITCH Ø 0.5539 ± 0.0010 0.003 A B 0.005-0.010 X 45 0.06 2X R0.016 B NOTES: 1) THIS THREAD CAN BE USED FOR ANY .45 AUTO BARREL. A 2) THIS IS THE BEST THREAD FOR MOST 1911 BARRELS, SIG .45 AUTO PISTOLS, AND SPRINGFIELD XD BARRELS. A 3) THIS THREAD PROFILE IS DESIGNED TO INDEX ON THE MUZZLE FACE.
PAGE 12
8 5 6 7 4 2 3 1 0.62 D D 0.100 MAX TO FIRST FULL THREAD 0.025 X 45° 0.0005 A C C A 0.675 MINIMUM B B 0.6250-24-SPECIAL MAJOR Ø 0.6220 ± 0.0030 PITCH Ø 0.5969 ± 0.0010 0.003 A 0.005-0.010 X 45 +0.000 R0.021 - 0.010 NOTES: A 1) THIS THREAD GUIDE DETAILS A SPECIAL 5/8-24 THREAD FOR 7.62mm BARRELS. THE THREAD IS DESIGNED TO PROVIDE A BETTER FIT WITH THE 5/8-24-UNEF-3B THREADS IN AAC DIRECT THREAD RIFLE SILENCERS THAN THE INDUSTRY STANDARD CLASS-2B THREAD. Advanced Armament Corp.
PAGE 13
8 5 6 7 4 2 3 1 0.62 D D 0.100 MAX TO FIRST FULL THREAD 0.025 X 45° 0.0005 A C C A 0.675 MINIMUM B 0.6250-24-UNEF-2A MAJOR Ø 0.6238-0.6166 PITCH Ø 0.5967-0.5927 MINOR Ø 0.5787-0.5656 0.003 A 0.005-0.010 X 45 R0.005 MAX. R. NOTES: A B 1) THIS THREAD GUIDE DETAILS A BARREL MUZZLE PROFILE WITH 5/8-24-UNEF-2A THREADS AS FOUND INDUSTRY WIDE ON MOST THREADED 7.62mm RIFLE BARRELS. THIS THREAD PROFILE IS COMPATIBLE WITH ALL AAC MUZZLE DEVICES. Advanced Armament Corp.
PAGE 14
8 7 6 5 4 2 3 1 +0.02 2.53 - 0.00 HOLD Ø 0.750 +0.000/-0.002 TO THIS MINIMUM LENGTH D D 0.62 0.100 MAX TO FIRST FULL THREAD .025 X 45° 0.0005 A A C C +0.000 0.750 - 0.002 .003 A B B 0.005-0.010 X 45 0.6250-24-UNEF-2A MAJOR Ø 0.6238-0.6166 PITCH Ø 0.5967-0.5927 MINOR Ø 0.5787-0.5656 0.003 A +0.000 R0.021 - 0.010 A A Advanced Armament Corp. 2408 TECH CENTER PARKWAY, SUITE 150 LAWRENCEVILLE, GA 30043 - 770-925-9988 WWW.ADVANCED-ARMAMENT.
PAGE 15
8 6 7 5 4 2 3 1 0.931 DETAIL A SCALE 8 : 1 +0.02 0.62 - 0.00 D D 0.100 MAX TO FIRST FULL THREAD 0.005-0.010 X 45 .025 X 45° R0.016 C 0.0005 A A C A B B .6250-24-UNEF-2A MAJOR Ø 0.6238-0.6166 PITCH Ø 0.5967-0.5927 MINOR Ø 0.5787-0.5656 0.003 A +0.000 0.750 - 0.005 0.003 A NOTES: A 1) THIS THREAD GUIDE DETAILS A BARREL MUZZLE PROFILE DESIGNED SPECIFICALLY FOR THE AAC NO-RING 7.62mm FLASH HIDER PART NUMBER - 102388. Advanced Armament Corp.
PAGE 16
8 6 7 5 4 2 3 1 0.75 0.06 D D 0.025 X 45° A 0.850 MINIMUM C C A B DETAIL A SCALE 8 : 1 0.0005 A 0.640 M18 X 1-4g6g MAJOR Ø 17.974mm-17.794mm PITCH Ø 17.324mm-17.249mm MINOR Ø 16.891mm-16.633mm 0.003" A 45° 0.005-0.010 X 45 A B R0.016 NOTES: A 1) THIS METRIC RIFLE BARREL THREAD PROFILE IS OPTIMIZED FOR USE WITH AAC DIRECT THREAD RIFLE SILENCERS. Advanced Armament Corp. 2408 TECH CENTER PARKWAY, SUITE 150 LAWRENCEVILLE, GA 30043 - 770-925-9988 WWW.ADVANCED-ARMAMENT.
PAGE 17
8 6 7 5 4 2 3 1 0.70 0.08 0.042 X 45° D D A 0.760 MINIMUM C C A DETAIL A SCALE 8 : 1 M18 X 1.5-4g6g MAJOR Ø 17.968mm-17.732mm PITCH Ø 16.994mm-16.904mm MINOR Ø 16.344mm-15.980mm 0.003" A 0.0005 A +0.000 0.625 - 0.010 B B 45° 0.005-0.010 X 45 R0.016 NOTES: A 1) THIS THREAD GUIDE DETAILS A BARREL MUZZLE PROFILE WITH M18 X 1.5 THREADS FOR AAC DIRECT THREAD SILENCERS. THIS IS NOT THE ACCURACY INTERNATIONAL PROFILE, WHICH IS OPTIMIZED FOR FAST ATTACH MUZZLE BRAKE MOUNTING.
PAGE 18
8 7 6 D 5 4 2 3 1 0.625 0.035 MAX. DISTANCE TO FIRST FULL THREAD D 0.0005 A .030 X 45° C C A 0.825 MINIMUM B B 0.005-0.010 X 45 R0.005 MAX .R. 0.7500-24-UNS-2A MAJOR Ø 0.7488-0.7416 PITCH Ø 0.7217-0.7176 MINOR Ø 0.7037-0.6906 0.003 A NOTES: A 1) THIS THREAD GUIDE DETAILS A 3/4-24-UNS-2A THREAD FOR 7.62mm AND LARGER CALIBER RIFLE BARRELS. THE THREAD IS DESIGNED TO BE COMPATIBEL WITH ALL AAC MUZZLE DEVICES.
PAGE 19
8 6 7 5 4 2 3 1 0.63 O.O3O X 45° 0.06 D D A 0.825 MINIMUM C C A B 0.0005 A +0.000 0.690 - 0.010 0.7500-24 SPECIAL MAJOR Ø 0.7470 ± 0.0030 PITCH Ø 0.7219 ± 0.0010 0.003 A DETAIL A SCALE 8 : 1 B 45° 0.005-0.010 X 45 R0.016 NOTES: A 1) THIS THREAD GUIDE DETAILS A SPECIAL 3/4-24 THREAD FOR 7.62mm BARRELS. THE THREAD IS DESIGNED TO PROVIDE A BETTER FIT WITH THE 3/4-24-UNEF-3B THREADS USED IN AAC DIRECT THREAD SILENCERS THAN THE INDUSTRY STANDARD 3/4-24 CLASS-2B THREAD.