2021年7月14日 · I don't have the PTR versions of those guns but I do have an HK51 built off an FMP XG3S receiver and a G3K built off an HK91 receiver. The G3K (12" barrel) variant is infinitely more practical. Its a softer shooter, better ballistics, way less blast, longer sight radius, less proprietary parts (carrier and recoil rod), etc. etc.

2018年3月28日 · I have a K3P (G3K copy); slightly longer barrel but still by PTR. I'm running into barrel shoulder and thread/bore concentricity issues, so be aware...be very thorough when checking alignment. Posted: 4/12/2018 5:50:07 PM EDT

2017年3月1日 · Checking your bolt gap (what they're referring to by "rollers") is independent of suppressing your PTR. With HK roller-locks, the angle of the locking piece relates to how quickly the bolt unlocks after firing. The lower the angle in degrees, the longer it takes to unlock the bolt.

2017年12月29日 · Due to the barrel length difference (51 running an ~9" barrel vs. a ~18" on a 91) the receiver based cocking tube is also correspondingly shortened as well, with the 51 having roughly a 53/MP5 receiver length cocking tube support vs. the normal G3/HK91 length support.

2016年8月25日 · I called PTR and followed their recommended break in procedure; they also recommended that I use .308 ammo for the first 50 rounds as it is loaded hotter than the 7.62x51 NATO ammo. You really are going to love your PTR PDW, everyone NEEDS a 7.62x51 NATO SBR with an 8" barrel.

2025年2月22日 · Galils, G-3, Vector or PTR 51, Browning A-5. ... Haitian troops had some PDW-style PTR rifles in their ...

2015年3月1日 · Quoted: Efile, wait 30 days, engrave, receive stamp, push out two pins, slide on new stock, put two pins back in. Shoot new SBR.

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2018年5月10日 · Ok ill explain it, the suppressor adds to the length of the barrel. the system is timed to open at the stock length. when you add another 10+ inches to the barrel it wont have time to bleed off the excess pressure. so when the bolt opens its over gassed/more pressure than stock. which will batter the back of the stock breaking the tack welds on the cap.

2016年4月6日 · In between form 1ing one of the ptr pistols and picking up another suppressor. I already have a 7.5" AR, and i'm curious how much louder the 51p would be with it's 8.5" barrel? Posted: 4/4/2016 10:32:40 PM EST