Results 1 to 7 of 7
Thread: Roll Pin Equivalent
-
1 July 2014, 11:02 #1Member
- Join Date
- Oct 2010
- Location
- Kansas
- Posts
- 56
- Downloads
- 0
- Uploads
- 0
Roll Pin Equivalent
I recently purchased a railed gas block to replace a FSB on my carbine. The railed block is a high profile CMMG with a bayonet lug (no roll pin included). One thing that stands out is that it's very thick from side to side. Where the gas tube pin goes, it's 3/4". I'm looking at my FSB and the roll pin there is I'm guessing 3/8". I did some research and found from another source that the gas tube pin diameter is 5/64". At my local ACE Hardware they have several different lengths in 5/64" diameter. Is the 5/64" diameter of the gas tube roll pin accurate?
Last edited by hg8057; 1 July 2014 at 11:12.
-
1 July 2014, 12:19 #2
You're looking to find a roll pin for the gas tube?
5/64 that's 1/4" long should work.
I normally just buy gas block roll pins from Brownells or Rainier Arms.
If you buy a gas tube from places like BCM, they will include the gas tube roll pin with the tube.
-
1 July 2014, 12:59 #3Member
- Join Date
- Oct 2010
- Location
- Kansas
- Posts
- 56
- Downloads
- 0
- Uploads
- 0
Yep, just a roll pin. But, one that's just a bit longer than the usual.
ACE has 'em at 5/64" x (up to) 3/4". I figured I'd give a 5/8" a shot to keep the ends below the side of the 3/4" thick gas block.
-
1 July 2014, 13:01 #4
So you decided to get the exposed gas block? That's probably not going to work with the ALG Rail if that's what you plan to do.
-
1 July 2014, 13:04 #5Member
- Join Date
- Oct 2010
- Location
- Kansas
- Posts
- 56
- Downloads
- 0
- Uploads
- 0
Here's the source of my info:
Credit to BradH posting on AR15.com
www.mscdirect.com MSC has machine tools, hardware, etc
Item # 67501122
Desc 1/16 x 7/16 Coiled Spring Pins-EJECTOR
Item # 67501445
Desc 3/32 x 7/16 Coiled Spring Pins-BOLT CATCH
Item # 67501569
Desc 3/32 x 5/8 Coiled Spring Pins-TRIGGER GUARD, REAR SIGHT, FORWARD ASSIST
Item # 67594085
Desc 1/16 x 1/4 SPRING DOWEL PIN 420 SS-FORWARD ASSIST PAWL
Item # 67501163
Desc 1/16 x 1/2 Coiled Spring Pins-WINDAGE KNOB
Item # 09265067
Desc -006 VITON PAK OF 100 VITON O-RINGS -EXTRACTOR O-RING
Item # 67594481
Desc 5/64 x 3/8 SPRING DOWEL PIN 420 SS - GAS TUBE........1/16" TOO LONG, TRIM
Item # 00073379
Desc 1/8 SS440 GRADE 100 440-C STAINLESS BALL100PK - REAR SIGHT BALLS
-
1 July 2014, 13:07 #6Member
- Join Date
- Oct 2010
- Location
- Kansas
- Posts
- 56
- Downloads
- 0
- Uploads
- 0
-
1 July 2014, 13:11 #7