Most of the “secrets” aren’t secret.
Allowed-
40.30 Allowable Modifications to “Stock”
1. “Hogue Grip”-type sleeves, “A-Grip” panels, “skateboard tape” or other non-permanent grip-
enhancing materials that do not materially alter the function of the stock firearm
2. Slide and barrel stripping and/or refinishing
3. Pearce Grip, Inc. grip extenders only on G26, G27, G29, G30, G33, G36, G39, G42 and G43 magazines
4. Aftermarket replacement non-metallic base plates on magazines
5. Notch and Post sights (“patridge” sights) excluding any sight requiring slide modifications. Please note that fiber-optic and “express” sights are approved.
6. Aftermarket “Beavertail” grip extensions for Pre-GLOCK Gen 4/Gen 5 (Gen 3 & prior) models that are similar in dimensions, appearance and function to those now available for certain GLOCK Gen 4 and later generation models. Necessary usage of permanent adhesives to affix such Beavertail units is permitted.
7. Aftermarket “Magazine Funnels” made from polymers or aluminum only. Such Magazine Funnels made from Brass or other heavier metals may only be used in the “Unlimited” Division.
8. Installation of the GLOCK Performance Trigger in the G19 Gen5/MOS, G17 Gen5/MOS, G19X, G26 Gen5, G34 Gen5/MOS, G45/MOS, and G47 MOS only.
You may use any combination of GLOCK-produced firearms parts that do not result in a significant competitive advantage in the Stock divisions and that are, in the sole opinion of the match armorer, safe to utilize.
Not allowed-
Specific Non-Compliant Modifications in the “Stock” Divisions:
1. Any non-notch and post sight. This includes “Ghost Ring” or laser, electronic and optical sights. Please note that fiber-optic and express sights are permitted.
2. Wrap-around “magazine sleeves” on magazines.
3. Aftermarket component parts to be used in the Amateur-Civilian, Amateur-Guardian, Amateur or Master Subcompact, Amateur or Master Heavy Metal, Amateur and Master Master-Stock, Amateur or Master Competition, Amateur or Master Pocket GLOCKs, Amateur or Master Major Subcompact, Amateur or Master Rimfire, Amateur or Master GLOCK MOS and Amateur or Master GLOCK Girl divisions except as otherwise provided for in Section 40.30.
4. Aftermarket barrels.
5. Aftermarket recoil spring guide/recoil reducer assemblies.
6. Firing pins (modified/aftermarket).
7. Connectors (modified/aftermarket).
8. Non-Polymer or non-Aluminum metallic magazine well “funnels” or “”grip filling slugs” of any kind.
9. Lights or other barrel weights including GLOCK-produced light/laser units.
10. Aftermarket frames.
11. Any modification deemed by the Range Master to create an unfair competitive advantage
12. Non-factory “stippling”.(Stippling that is burned or cut into the polymer frame)
13. Grip enhancing materials affixed by permanent means, such as epoxy glues, which constitute a permanent modification to the firearm.
14. A “Binary” trigger in which the firearm fires one round when the trigger is pulled to the rear and one round when the trigger returns to reset.
40.50 All firearms are subject to inspection at the matches for appropriate classification. Random inspections may occur at GSSF® matches. If a GLOCK pistol is deemed illegal for a Stock division, if possible the competitor’s entry will be moved to the Amateur or Master Unlimited division. Refunds will not be given to those who fail inspection.
45.0 Illegal parts in the “Unlimited” Division:
1. “Carbine Conversion” units (no shoulder stocks)
2. Aftermarket frames.
3. Any conversion kit that does not fire a round for which GLOCK manufactures a firearm (see section 50.)
4. Neither G44 .22 Rimfire GLOCKs nor aftermarket 22 Rimfire conversion kits installed on GLOCK frames may be used in the Unlimited Division.