Jordan G.
Newbie
So, I just finished assembling my Roland Special. I want to preface this by telling my early experience in 2017 with the KKM comp on a Glock 19 Gen 4.In early 2017, I obtained my first KKM comp. During testing I was running Blazer 9mm 115 gr bullets and some Fiocchi 115 gr ammo. At that time, the gun would not run properly due to lack of added power to the cartridge, some missing modifications to the pistol and keeping the comp secured on the barrel.
After my disappointing range session, I did some homework on how to make the gun run properly. After perusing the P&S forum and asking some questions, I was guided to running hotter ammo and lighter springs. I also used blue Loctite to keep the setscrews in the comp.Upon obtaining an ISMI 13 pound spring and a ZEV guide rod kit for a Gen 4 Glock and using some hotter ammo (1190 fps+), I went back to the range with the same result. The gun did not run reliably with the added accessories. I had some stovepipes to contend with and feeding issues. In addition to the extraction and feeding issues, I still had a problem of keeping the comp's set-screws secured with blue Loctite. Also my fiber optic front sight was dumped with expelled power and could not get a bright fiber optic front. After this session, I was disappointed with the result. I eventually sold the comp and the accessories in 2017.
Fast forward a year and some change, there was a part of me nagging me to re-evaluate the Roland Special concept. After a much thorough homework session on what made the gun work and giving the concept to mature a little bit, I finally completed my build thanks to ATEi, Overwatch Precision, Wolff, Primary & Secondary and Chuck Pressburg.
In this re-evaluation, I ensured I ran hotter ammo (+ p or + p +), used actual components to compliment the gun. Moreover, I ensured proper Loctite (Vibra-TITE VC-3) was used to keep the comp secure with its setscrews.
Yesterday I ran my Roland Special G19 Gen 4 and it ran great. Before, I did any range time I conducted a function test of the pistol to ensure it ran with all of its components.
(Ammunition for the test was as follows: 115gr S&B, 115gr Winchester, 124gr +p Gold Dot, Magtech 115gr +p+ and Winchester 124 NATO)
The function test was broken down in this manner:
-4 mags of one round of 9mm - Test slide lock
-One 10 round mag of 9mm -load one round in chamber, took magazine out and shot two handed, test extraction
-One 10 round mag of 9mm - loaded one round in pistol, took magazine out and shot limp wristed, test extraction
-One 10 round mag of 9mm - mag dump to see extraction pattern.
I came up with this test from a 1911 extractor test. Before everyone comes at me that Glocks are not 1911s, I hear you. I am focusing my test on one part of the pistol, which is the extractor. I want to emphasize that using a stock Glock extractor on a Gen 4, this test would not work since I've tried it before in 2017 and after replacing the extractor with the Apex extractor, #32074 ejector and SP01176 spring loaded bearing it worked for me.
After the pistol passed the 170 round function test, I proceeded shooting around 300 rounds through the pistol of 124gr NATO. After 300 rounds and counting, lets say that the comp worked much better with the added power in the cartridge and validated the viability of the concept to me with hotter loads.
Here is my current set up of my pistol for everyone’s SA:
Wolff +power trigger spring
Wolff -power plunger spring
Overwatch Precision DATv2
Apex extractor#32074 ejector
SP01176 spring loaded bearing
KKM Comp 9mm
Hope my piece gives a prospective builder an idea of some of the hurdles I initially faced and how it led to a successful conclusion.
After my disappointing range session, I did some homework on how to make the gun run properly. After perusing the P&S forum and asking some questions, I was guided to running hotter ammo and lighter springs. I also used blue Loctite to keep the setscrews in the comp.Upon obtaining an ISMI 13 pound spring and a ZEV guide rod kit for a Gen 4 Glock and using some hotter ammo (1190 fps+), I went back to the range with the same result. The gun did not run reliably with the added accessories. I had some stovepipes to contend with and feeding issues. In addition to the extraction and feeding issues, I still had a problem of keeping the comp's set-screws secured with blue Loctite. Also my fiber optic front sight was dumped with expelled power and could not get a bright fiber optic front. After this session, I was disappointed with the result. I eventually sold the comp and the accessories in 2017.
Fast forward a year and some change, there was a part of me nagging me to re-evaluate the Roland Special concept. After a much thorough homework session on what made the gun work and giving the concept to mature a little bit, I finally completed my build thanks to ATEi, Overwatch Precision, Wolff, Primary & Secondary and Chuck Pressburg.
In this re-evaluation, I ensured I ran hotter ammo (+ p or + p +), used actual components to compliment the gun. Moreover, I ensured proper Loctite (Vibra-TITE VC-3) was used to keep the comp secure with its setscrews.
Yesterday I ran my Roland Special G19 Gen 4 and it ran great. Before, I did any range time I conducted a function test of the pistol to ensure it ran with all of its components.
(Ammunition for the test was as follows: 115gr S&B, 115gr Winchester, 124gr +p Gold Dot, Magtech 115gr +p+ and Winchester 124 NATO)
The function test was broken down in this manner:
-4 mags of one round of 9mm - Test slide lock
-One 10 round mag of 9mm -load one round in chamber, took magazine out and shot two handed, test extraction
-One 10 round mag of 9mm - loaded one round in pistol, took magazine out and shot limp wristed, test extraction
-One 10 round mag of 9mm - mag dump to see extraction pattern.
I came up with this test from a 1911 extractor test. Before everyone comes at me that Glocks are not 1911s, I hear you. I am focusing my test on one part of the pistol, which is the extractor. I want to emphasize that using a stock Glock extractor on a Gen 4, this test would not work since I've tried it before in 2017 and after replacing the extractor with the Apex extractor, #32074 ejector and SP01176 spring loaded bearing it worked for me.
After the pistol passed the 170 round function test, I proceeded shooting around 300 rounds through the pistol of 124gr NATO. After 300 rounds and counting, lets say that the comp worked much better with the added power in the cartridge and validated the viability of the concept to me with hotter loads.
Here is my current set up of my pistol for everyone’s SA:
Wolff +power trigger spring
Wolff -power plunger spring
Overwatch Precision DATv2
Apex extractor#32074 ejector
SP01176 spring loaded bearing
KKM Comp 9mm
Hope my piece gives a prospective builder an idea of some of the hurdles I initially faced and how it led to a successful conclusion.