Threading Guide
0.745±0.003
1.875
HOLD Ø0.745 ±.003
TO THIS POINT
A
HOLD THIS PERPENDICULARITY FOR
AAC SPR-M4 MUZZLE BRAKE.
0.0005
A
A
0.100 MAX TO
FIRST FULL THREAD
0.62
+
-
0.02
0.00
0.005-0.010
X 45
R0.005
MAX. R.
0.025
+
-
0.014
0.000
X 45
DETAIL A
HOLD THIS PERPENDICULARITY
FOR AAC SPR-M4 FLASH
HIDER.
0.0005
A
NOTES:
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
SPR-M4 MUZZLE DEVICES.
D
C
B
A
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
TITLE:
SIZE:
"B"
PART
NO.:
SCALE:
SHEET:
6 OF 19
THREAD GUIDE
4:1
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
1/2-28-UNEF-2A THREADS
(M4 BARREL PROFILE) FOR USE
WITH AAC SPR-M4 MUZZLE DEVICES
01
.X
0.1
.XX
0.01
.XXX
0.005
.XXXX
0.0005
ANGLES
0.5
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.