GMSTB 2.5/ 4-STF-7.62 GMSTB 2.5/ 5-ST-7.62 GMSTB 2.5/ 6-ST-7.62 GMSTB 2.5/ 8-GF-7.62 GMSTB 2.5/ 8-STF-7.62 GMSTB 2.5/10-ST GMSTB 2.5/12-ST GMSTB 2.5/12-ST-7.62 GMSTB 2.5/2-ST-7.62 GMSTB 2.5/3-ST