Important AK BARREL Notes:
DIAMETERS AT KEY POINTS ON VARIOUS RIFLE BARRELS
7.62x39 Caliber
| CHINESE BARREL: |
O. D. DIMENSIONS
|
| Chamber .764" |
(19.25mm w/ .005 - .006"
press fit) |
| Rear Sight Base .734" |
(18.5mm w/ .005 - .006"
press fit) |
| Handguard Retainer .691" |
|
| Gas Block .634" |
(16mm w/ .003 - .004" press
fit) |
| Front Sight Base .594" |
(15mm w/ .003 - .004" press
fit) |
| EURO PATTERN BARREL: |
|
| Chamber .908" |
(23mm w/ .003 - .004"
press fit) |
| Rear Sight Base .694" |
(17.5mm w/ .003 - .004"
press fit) |
| Handguard Retainer .671" |
|
| Gas Block .594" |
(15mm w/ .003 - .004" press
fit) |
| Front Sight Base .575" |
(14.5mm w/ .003 - .004"
press fit) |
5.45x39 Caliber
| BULGARIAN BARREL: |
O. D. DIMENSIONS
|
| Chamber .871" |
(22mm w/ .004 - .005" press
fit) |
| Rear Sight Base .694" |
(17.5mm w/ .003 - .004"
press fit) |
| Handguard Retainer .671" |
|
| Gas Block .594" |
(15mm w/ .003 - .004" press
fit) |
| Front Sight Base .575" |
(14.5mm w/ .003 - .004"
press fit) |
| GERMAN BARREL: |
| Chamber .867" |
(22mm w/ .001 - .002"
press fit) |
| Rear Sight Base .694" |
(17.5mm w/ .003 - .004"
press fit) |
| Handguard Retainer .671" |
|
| Gas Block .594" |
(15mm w/ .003 - .004" press
fit) |
| Front Sight Base .575" |
(14.5mm w/ .003 - .004"
press fit) |
| ROMANIAN BARREL: |
| Chamber .908" |
(23mm w/ .003 - .004" press
fit) |
| Rear Sight Base .694" |
(17.5mm w/ .003 - .004"
press fit) |
| Handguard Retainer .671" |
|
| Gas Block .594" |
(15mm w/ .003 - .004"
press fit) |
| Front Sight Base .517" |
(13mm w/ .004 - .005" press
fit) |
| ROMANIAN
SHORT BARREL: |
| Chamber .908" |
(23mm w/ .003 - .004" press
fit) |
| Rear Sight Base .694" |
(17.5mm w/ .003 - .004"
press fit) |
| Handguard Retainer .671" |
|
| Combination Gas Block
& Front Sight Base .575" |
(14.5mm w/ .003 - .004"
press fit) |
CLICK
ON RIFLE FOR AK74 RUSSIAN TECH MANUAL SERIES
AK IN ACTION
AK BOLT CARRIER COMPARISON
BETWEEN FULL-AUTO (F/A) &
SEMI-AUTO
Auto Sear Trip is shown on top
F/A Bolt Carrier
Most semi-auto have the Trip
ground off as shown on bottom Bolt Carrier
| 
