ANT SUPPLIES LTD
Free postage and packaging, UK mainland.
RIFLE THREAD EXTENSION
1/2″ x 20 UNF£12.00p each
MORE SOON
External thread ~ 1/2x20 UNF.
Internal thread ~ 1/2x20 UNF.
Knurling for a firm grip.
OPTION E-I-LONG
1/2″ x 28 UNEF£12.00p each
External thread ~ 1/2x28 UNEF.
Internal thread ~ 1/2x28 UNEF.
Knurling for a firm grip.
OPTION E-II-LONG
M14 LEFT-HAND£12.00p each
External thread ~ 14mm CCW / LH.
Internal thread ~ 14mm CCW / LH.
OPTION E-V-LONG
M14 RIGHT-HAND£12.00p each
External thread ~ 14mm CW / RH.
Internal thread ~ 14mm CW / RH.
OPTION E-VI-LONG
Please Note: we have recently added these, and although most fit well, we have received some feedback that the 1/2x20 UNF extension doesn't fit some higher end silencers.
We are not sure why as yet, but it looks like the tolernace on the threads is not a perfect match.
We hope to work it out on future batches, and for now will add a list of any accessories we are told they don't fit.
Your option to return an order for a full refund, if not a fit, is unaffected.
So far:
Air Arms Q-Tec Moderator (21/02/26).
Swift Sound Moderator (04/03/26).
Condition: New
Rifle barrel thread extender for threaded muzzles, with female and male thread type.
Please Note: these are extensions pieces, they are not adapters, they just extend the thread to the same thread type.
They are designed for when you need to extended the threads to allow for clearance from the handguard, for fitting the moderator, muzzle brake, air stripper, etc.
Made of aluminium with black anodised finish.
Overall diameter ~ 19mm.
Overall length ~ 35mm.
Body length ~ 20mm.
Thread length ~ 15mm.
Weighs ~ 10 grams.
The majority of UK air rifles are 1/2 UNF (1/2x20 TPI).
UK firearms are usually either 1/2x20 UNF or 1/2x28 UNEF.
The majority of USA .223 rifles are 1/2 UNEF (1/2x28 TPI).
Larger caliber rifles (.30>) are usually 1/2x28 UNEF or 5/8x24 UNEF.
1/2-20 TPI = UNF ~ Unified National Fine thread.
1/2-28 TPI = UNEF ~ Unified National Extra Fine thread.
M14 x 1LH (Left Hand) are 14mm CCW.
Right hand (RH) / clockwise (CW) / positive (+) tighten by turning clockwise.
Left hand (LH) / anticlockwise / counter-clockwise (CCW) / negative (-) tighten by turning anticlockwise.
This applies to the silencer (etc) rotating, when looking at the front of the muzzle.
Please Note: Thread protectors also available.
SPECIAL OFFER:
Need a thread protector at the same time?
Use Promo Code ~ SATGAddon ~ for 50% off:
Thread protectors page link ~ HERE
Also available ~ 20 UNF and 28 UNEF Rifle Thread Long Adapters.
1/2 x 20 UNF:
1/2 x 28 UNEF:
M14 COUNTER-CLOCKWISE / LEFT HAND THREAD:
M14 CLOCKWISE / RIGHT HAND THREAD:
